81279 + Interview Questions in Mathematics QA in Mathematics

1.	A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, whichis surmounted by another cylinder of height 60 cm and radius 8 cm. Find the mass of thepole, given that I cm3 of iron has approximately 8g mass. (Use π-314)6.
Answer»

Discussion

2.	6. A solid iron pole consists of a cylinder of base diameter 24 cm asurmounted by another cylinder of radius 8 cm and height 60 cmpole, if it is given that 1 cm3 of iron has approximately 8g mass. (
Answer»

Discussion

3.	6.A solid iron pole consists of a cylinder of height 220 cmand base diameter 24 cm, which is surmounted by anothercylinder of height 60 cm and radius 8 cm. Find the mass ofthe pole, given that 1 cm3 of iron has approximately 8gmass. (Use t 3.14)
Answer»

Discussion

4.	S8 स्काआारा रूक स्वपान से दूसरे स्डातन 60 दिशा /4, की -थालन झै जाती डेAT 3R = घर लापस 0 1८९R—=rrar झे आए जाती कि \ A5मे उीसित -याल AT 4]
Answer» औसत गति = कुल लंबाई / कुल समय यदि एक्स = दूरी एबी किमी में तो दो बार जोड़ने के लिए हैं टैब = एक्स / 50 और टीबीए = एक्स / 60 AvSpeed = 2 * x / (x / 50 + x / 60) = 2 * 60 * 50 / (50 + 60) = 54.4 किमी / घंटा average speed = total length / total time if x= distance AB in km then the two times to add are Tab= x/40 and Tba= x/50 AvSpeed= 2x/(x/50+x/60) = 260*50/(50+60) = km/hr

4.

S8 स्काआारा रूक स्वपान से दूसरे स्डातन 60 दिशा /4, की -थालन झै जाती डेAT 3R = घर लापस 0 1८९R—=rrar झे आए जाती कि \ A5मे उीसित -याल AT 4]

Answer»

औसत गति = कुल लंबाई / कुल समय

यदि एक्स = दूरी एबी किमी में तो दो बार जोड़ने के लिए हैं

टैब = एक्स / 50 और टीबीए = एक्स / 60

AvSpeed = 2 * x / (x / 50 + x / 60) = 2 * 60 * 50 / (50 + 60) = 54.4 किमी / घंटा

average speed = total length / total time

if x= distance AB in km then the two times to add are

Tab= x/40 and Tba= x/50

AvSpeed= 2*x/(x/50+x/60) = 2*60*50/(50+60) = km/hr

Discussion

5.	e VTNN R T 30:22 आल कर स्पर्श रेखाएँ हैचित्र में, /24 और 2०8 दिए गए वृत्त की स्पः लव खाएँ हैं जबकि13, दिए गए चित्र में, B - ggemvﬂmuaﬁmﬂfw" a5 सेमी तथा 2APB -PA=5
Answer» Like my answer if you find it useful!

Discussion

6.	The inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter a28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if I cm of woodhsa mass of 0.6 g.2.
Answer»

Discussion

7.	dropped in the vessel.A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, whichis surmounted by anothcr cylinder of height 60 cm and radius 8 cm. Find the mass of thepole, given that 1 cm of iron has approximately &g mass. (Use T 3.14)6.intionris the rtanding on
Answer»

Discussion

8.	11. The inner diameter of a cylindrical pipe is 24 cm and its outer diameter is 28 cm. The lengthof the pipe is 35 cm. Find the mass of the pipe, if 1 cm of material used to make pipe weighs 0.6 gm.
Answer»

Discussion

9.	s. From a solid cylinder whose height is 24 cm and diameter 14 cm, a coaical cavity of thesame height and same diameter is hollowed out. Find the total surface area of theremaining solid to the nearest cm.
Answer»

Discussion

10.	The inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter is28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if I cm'of wood hasa mass of 06p2.
Answer»

Discussion

11.	From a solid cylinder of height 24 cm and diameter 14 cm, a conical cavity of the same height andsame diameter is hollowed out. Find the total surface area of the remaining solid119.0)
Answer»

Discussion

12.	12. Water flows at the rate of 10 m/minutes through a cylindrical pipe 5 mm in diameter. lHow long would ittake to fill a conical vessel whose diameter at the base is 40 cm and depth 24 cm?of enath 25.cm
Answer»

Discussion

13.	Write the place value of the underlined digit(a) 34,508 5 hundred or 500(c) 73,692
Answer» tens hence 90 or ninety 90 or ninety is the correct answer of the given question 90 or ninety is the correct answer Ninety 90 is the right answer right answer hai ye wala ninety or 90 it's correct answer this question 90 or ninty is correct answer 90 or ninety is the correct answer A)5 hundredB)90 is the right answer the right answer is 90 or ninety

13.

Write the place value of the underlined digit(a) 34,508 5 hundred or 500(c) 73,692

Answer»

tens hence 90 or ninety

90 or ninety is the correct answer of the given question

90 or ninety is the correct answer

Ninety 90 is the right answer

right answer hai ye wala

ninety or 90 it's correct answer this question

90 or ninty is correct answer

90 or ninety is the correct answer

A)5 hundredB)90 is the right answer

the right answer is 90 or ninety

Discussion

14.	angles are equal. Find the measuu2. Inh the fig, suppose 2P an125 Rare supplementary angles and125. Find the measures of S.LR =
Answer» In a quadrilateral sum of angels =360so <P+<Q=180(supplementary)There fore <P+<Q+<R+<S=360180+125+<S=360305+<S=360<S=360-305<S=55There fore angel of S is equal to 55..

Discussion

15.	\left. \begin{array} { r } { 125 } \\ { + 250 } \\ \hline \end{array} \right.
Answer» it's so simple to answer it 125 + 250=375

Discussion

16.	22अब समीकरण (1) में से समीकरण (2) घटाने पर,-2y=-64 याy %3D32समीकरण (1) में y=32 रखने पर, x-4x32 3-60या-128= -60 याx= 68अतः पिता तथा पुत्र की वर्तमान आयु क्रमश: 68 वर्ष तथा 32 वर्ष हैं।प्रश्न 8. दो अंकों से बनी किसी संख्या के अंकों का योग है। यदि सख्यके अंक उलट दिये जायें तो बनने वाली संख्या मूल संख्यास।अधिक होगी। संख्या ज्ञात कीजिए।इलादहाई का अंक = xतथा इकाई का अंक = yदो अंकों की संख्या = 10x + yV(NCEहल- माना,
Answer» 27 is correct answerMark as best to get the solution 27 is the correct answer as 2 +7 = 9and 72 -27 = 45

16.

22अब समीकरण (1) में से समीकरण (2) घटाने पर,-2y=-64 याy %3D32समीकरण (1) में y=32 रखने पर, x-4x32 3-60या-128= -60 याx= 68अतः पिता तथा पुत्र की वर्तमान आयु क्रमश: 68 वर्ष तथा 32 वर्ष हैं।प्रश्न 8. दो अंकों से बनी किसी संख्या के अंकों का योग है। यदि सख्यके अंक उलट दिये जायें तो बनने वाली संख्या मूल संख्यास।अधिक होगी। संख्या ज्ञात कीजिए।इलादहाई का अंक = xतथा इकाई का अंक = yदो अंकों की संख्या = 10x + yV(NCEहल- माना,

Answer»

27 is correct answerMark as best to get the solution

27 is the correct answer as 2 +7 = 9and 72 -27 = 45

Discussion

17.	1. The cost of 1 bicycle is 1475. Find the cost of 23 bicycles.
Answer» Cost of 23 bicycles will be 23*1475=33,925rupees

Discussion

18.	of 17x iि ही 6८ v (0. /ल्स्‍्क\| 1 (22 7; (०, 7 /) 8 22 3(८0 4A1 3 ~ पेदि है. (०1!
Answer» 19 will comeas its a seriesof +2 -2as15+2= 1712-2= 10same is being processed

Discussion

19.	1.The cost of 1 bicycle is1475. Find the cost of 23 bicycles
Answer» cost of 1 bicycle=1475so cost of 23 bicycles=1475×23=33925

Discussion

20.	6. Which of the two rational numbers is greater-4 -8(i) = 07(v)4-7or to
Answer» -5/8 this is because 0can be writtrr ii) is the correct answer 2 is the answer in this qus

20.

6. Which of the two rational numbers is greater-4 -8(i) = 07(v)4-7or to

Answer»

-5/8 this is because 0can be writtrr

ii) is the correct answer

2 is the answer in this qus

Discussion

21.	Iveă
Answer» 34-17x-5x-60=8-56x-17x-5x+56x=8+60-3434x=34X=1

Discussion

22.	ive reasons for the following statements:(i) {(ii) 11, 64, 125):r is a perfect square and perfect cube, r s125)2, 3, 5, 7, 9, 11) # (x : x is a prime number, x <12)
Answer»

Discussion

23.	3 5th of a job is finished in 30 days. In how many days, will the remaining par efsExbe finished?tottans go out, of order, how longw
Answer» thanks

Discussion

24.	ne cost of 1 bicycle is1475 Find the cost of 23 bicycles
Answer» 33925 is a cost of bicycle 33925 is the correct answer for this questionif answer is right then like answer cost of one bicycle is 1475cost of 23 bicycle is 1475 ×23=33925 cost of 23 bicycle =1475*23=33925rs cost of 1 bicycle is =1475 cost of 23 bicycle is =1475×23= cost of 1 bicycle is = 1475cost of 23 bicycle is=1475×23=33925 33925 is a cost of a bicycle 33925 is the cost of bicycle 33925 is a cost of 23 bicycles 33925 is the correct answer of the given question 33925 is the cost of bicycle 33925 33925 is correct answer.

24.

ne cost of 1 bicycle is1475 Find the cost of 23 bicycles

Answer»

33925 is a cost of bicycle

33925 is the correct answer for this questionif answer is right then like answer

cost of one bicycle is 1475cost of 23 bicycle is 1475 ×23=33925

cost of 23 bicycle =1475*23=33925rs

cost of 1 bicycle is =1475

cost of 23 bicycle is =1475×23=

cost of 1 bicycle is = 1475cost of 23 bicycle is=1475×23=33925

33925 is a cost of a bicycle

33925 is the cost of bicycle

33925 is a cost of 23 bicycles

33925 is the correct answer of the given question

33925 is the cost of bicycle

33925

33925 is correct answer.

Discussion

25.	20. (32836 +16466)21. (46703 +11375)22. There are 54 balls in box A and 79 balls in box B. Estimate the total number ol balls in bomthe boxes taken together.
Answer» total number of ball in both the boxes taken together are 130

Discussion

26.	coins ne wu23. In a bag containing black and white balls, half the numberof white is equal to a third of the number of black; and twice thewhole number of balls exceeds three times the number of black ballsy four. How many balls does the bag contain?mher consists of three digits, the right-hand one being
Answer»

Discussion

27.	, The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Finvast of white washing the walls of the room and the ceiling at the raτ7,50 per m
Answer»

Discussion

28.	contains 400 balls. If 20% balls are red, then find the number of red balls.
Answer» 20% of 400 balls will be20/100400=204=80 balls 100 % .40020%. ? 400*20. / 100 = 80

28.

contains 400 balls. If 20% balls are red, then find the number of red balls.

Answer»

20% of 400 balls will be20/100*400=20*4=80 balls

100 % .40020%. ?

400*20. / 100 = 80

Discussion

29.	Find the number of ways of selecting 9 balls from 6 red balls, 5 white balls and 5blue balls if each selection consists of 3 balls of each colour.
Answer»

Discussion

30.	A solid metallic cuboid of dimensions 9 m x 8m x 2 m is melted andrecast into solid cubes of edge 2 m. Find the number of cubes so formed.
Answer» thanks you no of cube 4 Kaise Kiya Apne Sory I have understood

30.

A solid metallic cuboid of dimensions 9 m x 8m x 2 m is melted andrecast into solid cubes of edge 2 m. Find the number of cubes so formed.

Answer»

thanks you

no of cube 4 Kaise Kiya Apne

Sory I have understood

Discussion

31.	ORtwo andSumit is 3 times as old as his son. Five yearent ?half times as old as his son. How old is Sumitat present
Answer» Let age of son be xThen age of Sumit is 3x 5 years later,Age of son = x + 5Age of Sumit = 3x + 5 As per given condition(3x + 5) = 2.5(x + 5)3x + 5 = 2.5x + 12.53x - 2.5x = 12.5 - 5.5x = 7.5x = 15 Therefore, Age of son = 15 years Age of Sumit = 3x = 3*15= 45 years

31.

ORtwo andSumit is 3 times as old as his son. Five yearent ?half times as old as his son. How old is Sumitat present

Answer»

Let age of son be xThen age of Sumit is 3x

5 years later,Age of son = x + 5Age of Sumit = 3x + 5

As per given condition(3x + 5) = 2.5(x + 5)3x + 5 = 2.5x + 12.53x - 2.5x = 12.5 - 5.5x = 7.5x = 15

Therefore, Age of son = 15 years Age of Sumit = 3x = 3*15= 45 years

Discussion

32.	3. Ram has 7 chocolates more than three times thenumber of chocolates with Sumit. If Ram has 13chocolates, write an equation to denote thenumber of chocolates with Sumit.
Answer»

Discussion

33.	110 yearThe ratio of the age of Sumit and Prakashis 2 3, Sumit is 6 year younger thanPrakash. Then find the ratio of their agesafter 6 years ?
Answer» given x = 6 Present age of Sumit =6×2=12 Present age of Prakash =3×6=18 ∴∴Age of Sumit after 6 years = 12 + 6 = 18 years ∴∴Age of Prakash after 6 years = 18 + 6 = 24 years ∴∴Sumit : Prakash 18 : 24 3 : 4 Please like the solution 👍 ✔️👍

33.

110 yearThe ratio of the age of Sumit and Prakashis 2 3, Sumit is 6 year younger thanPrakash. Then find the ratio of their agesafter 6 years ?

Answer»

given x = 6

Present age of Sumit =6×2=12

Present age of Prakash =3×6=18

∴∴Age of Sumit after 6 years = 12 + 6 = 18 years

∴∴Age of Prakash after 6 years = 18 + 6 = 24 years

∴∴Sumit : Prakash

18 : 24

3 : 4

Please like the solution 👍 ✔️👍

Discussion

34.	ORSumit is 3 times as old as his son. Five years later, he shall be two and ahalf times as old as his son. How old is Sumit at present?
Answer» Answer: Age of sumit = 3(15)=45yr

Discussion

35.	5. Nancy and Naina began their dance class at the same time. Naina finished her dance class6:30 p.m. and Nancy finished 45 minutes before Naina. At what time did Nancy finished herdance class?6. Mrs Sharma's office starts at 9:50 a.m. and closes at 7:10 p.m. Find the time duration of heroffice.
Answer» 6) 7:10PM-9:50am=9:20minute is correct answer a) Nancy finished her dance classes at 5:45p.mb) total time=9hours20min 5. 5:456, 9 hours 9 hours 20 minute is correct answer.

35.

5. Nancy and Naina began their dance class at the same time. Naina finished her dance class6:30 p.m. and Nancy finished 45 minutes before Naina. At what time did Nancy finished herdance class?6. Mrs Sharma's office starts at 9:50 a.m. and closes at 7:10 p.m. Find the time duration of heroffice.

Answer»

6) 7:10PM-9:50am=9:20minute is correct answer

a) Nancy finished her dance classes at 5:45p.mb) total time=9hours20min

5. 5:456, 9 hours

9 hours 20 minute is correct answer.

Discussion

36.	1 Saroj, Sheela, Moni, Shobha, and Sally took part in a cyele race Saroj fmishedfinished second to lsecond in the race?oni finished ahead of Shobha. Sally finished after Shobha. Whoast. Mau hoc 3 more marbles than Jath
Answer» MONI CAME SECOND, BECAUSE THEY HAVE GIVEN AS THAT MONI CAME AHEAD OF SHOBHA. AND THEY HAVE TYPED AS SHOBHA FINISHED LAST, SALLY FINISHED AFTER SHOBHA, MEANS SALLY CAME LAST.

Discussion

37.	011 Two angles measure (40-Đ°)" and (120+2a . If both team les are supplementary of oneother, find the vaseofa?
Answer»

Discussion

38.	DBV & 1 © ek इ b ‘ i e (75)
Answer» your answer is 36 cm in triangle BOClet D be mid point of BCso in triangle ODC (right triangle since BC is tangent)OC = hypotenuse = 3√5 cmOD = radius = 3 cm (given)so DC^2 = (3√5)^2-3^2 = 45 - 9 = 36 (pythagoras theorem)DC = 6 cm so BC = 2DC = 12 cm now the triangle ABC is equilateral since<BOC = 360/3 = 120in triangle BOC<OCB = <OBC (since OB = OC)<OCB+<OBC= 180-<BOC= 180-120= 60hence <OCB = <OBC = 30 now<ACO = <OCB since OC is angle bisectorso <ACO = 30now <ACO + <OCB = 60 = <C similarly <B = 60therefore <A = 60 hence its an equilateral triangle with side BC = 12cmhence perimeter is 12+12+12 = 36 cm

38.

Answer»

your answer is 36 cm

in triangle BOClet D be mid point of BCso in triangle ODC (right triangle since BC is tangent)OC = hypotenuse = 3√5 cmOD = radius = 3 cm (given)so DC^2 = (3√5)^2-3^2 = 45 - 9 = 36 (pythagoras theorem)DC = 6 cm

so BC = 2DC = 12 cm

now the triangle ABC is equilateral since<BOC = 360/3 = 120in triangle BOC<OCB = <OBC (since OB = OC)<OCB+<OBC= 180-<BOC= 180-120= 60hence <OCB = <OBC = 30

now<ACO = <OCB since OC is angle bisectorso <ACO = 30now <ACO + <OCB = 60 = <C

similarly <B = 60therefore <A = 60

hence its an equilateral triangle with side BC = 12cmhence perimeter is 12+12+12 = 36 cm

Discussion

39.	1. A man is 4 times his son's age. After 14 years, he will be twice as old as his son. Findtheir present age.
Answer» man's age is 28 and son's age is 7 man=28 & son=7 is the right answer now he is 14 year old it is twice to he is 7 year old without multiply 7 is the correct answer

39.

1. A man is 4 times his son's age. After 14 years, he will be twice as old as his son. Findtheir present age.

Answer»

man's age is 28 and son's age is 7

man=28 & son=7 is the right answer

now he is 14 year old it is twice to he is 7 year old without multiply

7 is the correct answer

Discussion

40.	A man is 4 times as old as his son. After 16 years he will be only twice as old as his son.Find their present ages.
Answer»

Discussion

41.	Which is correct?(a) Mean + Mode 3 (Mean + Med(b) Mean-Mode = 3 (Mean-Med(c) Mean - Mode 3 (Median - M(d) of these
Answer» a Is correct and b'c'd is incorrect

Discussion

42.	Example 2 : Find five rational numbers between 1 and 2We can approach this problem in at least two ways.
Answer» The rational number between a and b is (a + b)/2Hence rational number between 1 and 2 is (1+2)/2 = 3/2Rational number between 1 and 3/2 is [1+(3/2)]/2 = 5/4Rational number between 1 and 5/4 is [1+(5/4)]/2 = 9/8Rational number between 3/2 and 2 is [(3/2) + 2]/2 = 7/4Rational number between 7/4 and 2 is [(7/4) + 2]/2 = 15/8Therefore five rational numbers between 1 and 2 are 9/8, 5/4, 3/2, 7/4 and 15/8

Discussion

43.	A committee of 12 persons is to be formedfrom 9 women and 8 men. In how many wayscan this be done if at least five women have tobe included in a committee? In how many ofthese committees (i) women are in majority (ii)
Answer» Given that there are 9 women and 8 men. A committee of 12 is to be formed including at least 5 women. This can be done in the following ways. = 5W and 7M or 6W and 6M Or 7W and 5M Or 8W and 4M Or 9W and 3M No. of ways of forming committee is =9C5x8C7+9C6x8C6+9C7x8C5+9C8x8C4+9C9x8C3 = 9. 8. 7. 6 / 4 .3. 2. 1 x 8 + 9. 8. 7/3. 2. 1 x 8. 7/2. 1 + 9. 8/2. 1 x 8. 7. 6/3. 2. 1 + 9 x 8. 7. 6. 5/4. 3. 2. 1 + 1 x 8. 7. 6/3. 2. 1 = 126 x 8 + 24 x 28 + 36 x 56 + 9 x 70 + 56 = 6062 ways. (a) The women are in majority in 2016 + 630 + 56 = 2702 ways (b) The men are in majority in 1008 ways.

43.

A committee of 12 persons is to be formedfrom 9 women and 8 men. In how many wayscan this be done if at least five women have tobe included in a committee? In how many ofthese committees (i) women are in majority (ii)

Answer»

Given that there are 9 women and 8 men. A committee of 12 is to be formed including at least 5 women. This can be done in the following ways.

= 5W and 7M or 6W and 6M

Or 7W and 5M

Or 8W and 4M

Or 9W and 3M

No. of ways of forming committee is

=9C5x8C7+9C6x8C6+9C7x8C5+9C8x8C4+9C9x8C3

= 9. 8. 7. 6 / 4 .3. 2. 1 x 8 + 9. 8. 7/3. 2. 1 x 8. 7/2. 1 + 9. 8/2. 1 x 8. 7. 6/3. 2. 1

+ 9 x 8. 7. 6. 5/4. 3. 2. 1 + 1 x 8. 7. 6/3. 2. 1

= 126 x 8 + 24 x 28 + 36 x 56 + 9 x 70 + 56 = 6062 ways.

(a) The women are in majority in 2016 + 630 + 56 = 2702 ways

(b) The men are in majority in 1008 ways.

Discussion

44.	(12) A committee of 12 persons is to be formed from9 women and 8 men. In how many ways canthis be done if at least five women have to beincluded in a committee? In how many of thesecommittees(a) women are in majority?(b) men are in majority?
Answer»

Discussion

45.	lifference between the greatest five diFindnumber and the least five digit num112
Answer» greatest 5 digit number is 99999smallest 5 digit number is 1000099999-10000=89999 Greater 5 number is 9999999 Least 5. number is 00000000 greatest five digit number=99999smallest five digit number=10000difference=99999-10000=899999

45.

lifference between the greatest five diFindnumber and the least five digit num112

Answer»

greatest 5 digit number is 99999smallest 5 digit number is 1000099999-10000=89999

Greater 5 number is 9999999 Least 5. number is 00000000

greatest five digit number=99999smallest five digit number=10000difference=99999-10000=899999

Discussion

46.	Eht eircular cone of height 120 cm and radius 60 cmis placed in a right circular oylinder fiall oteight 130 cm such that it touches the bottom. Find the volume of water lett in the cyinder itwater of180 cus of the cylinder is equal to the radius of the cone
Answer»

Discussion

47.	Solve for xek eatbtx
Answer»

Discussion

48.	IfA and B are two sets such that n(A) = 20, n(B) = 25 and n(A U B) = 40, then find n(A 1n(4 )-20, n(B) = 25 and n(A U B) = 40
Answer»

Discussion

49.	Therate of decay of the mass of a radio active1.ubstance at any time is k times its mass att time. Form the differential equationthasatisfied by the mass of the substance
Answer» Let m be the mass of substance Rate of decay of mass of substance = dm/dtATQ dm/dt = km

Discussion

50.	If the probability of selecting a bulb from a bag isthen what is the probability of notselecting a bulb from the bag?SxCY
Answer» Given probability of selecting a bulb from a bag is 1/3. Therefore,Probability of not selecting a bulb from a bag = 1 - 1/3= (3 - 1)/3= 2/3

50.

If the probability of selecting a bulb from a bag isthen what is the probability of notselecting a bulb from the bag?SxCY

Answer»

Given probability of selecting a bulb from a bag is 1/3.

Therefore,Probability of not selecting a bulb from a bag = 1 - 1/3= (3 - 1)/3= 2/3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, whichis surmounted by another cylinder of height 60 cm and radius 8 cm. Find the mass of thepole, given that I cm3 of iron has approximately 8g mass. (Use π-314)6.

6. A solid iron pole consists of a cylinder of base diameter 24 cm asurmounted by another cylinder of radius 8 cm and height 60 cmpole, if it is given that 1 cm3 of iron has approximately 8g mass. (

6.A solid iron pole consists of a cylinder of height 220 cmand base diameter 24 cm, which is surmounted by anothercylinder of height 60 cm and radius 8 cm. Find the mass ofthe pole, given that 1 cm3 of iron has approximately 8gmass. (Use t 3.14)

S8 स्काआारा रूक स्वपान से दूसरे स्डातन 60 दिशा /4, की -थालन झै जाती डेAT 3R = घर लापस 0 1८९R—=rrar झे आए जाती कि \ A5मे उीसित -याल AT 4]

The inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter a28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if I cm of woodhsa mass of 0.6 g.2.

dropped in the vessel.A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, whichis surmounted by anothcr cylinder of height 60 cm and radius 8 cm. Find the mass of thepole, given that 1 cm of iron has approximately &amp;g mass. (Use T 3.14)6.intionris the rtanding on

11. The inner diameter of a cylindrical pipe is 24 cm and its outer diameter is 28 cm. The lengthof the pipe is 35 cm. Find the mass of the pipe, if 1 cm of material used to make pipe weighs 0.6 gm.

s. From a solid cylinder whose height is 24 cm and diameter 14 cm, a coaical cavity of thesame height and same diameter is hollowed out. Find the total surface area of theremaining solid to the nearest cm.

The inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter is28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if I cm'of wood hasa mass of 06p2.

From a solid cylinder of height 24 cm and diameter 14 cm, a conical cavity of the same height andsame diameter is hollowed out. Find the total surface area of the remaining solid119.0)

12. Water flows at the rate of 10 m/minutes through a cylindrical pipe 5 mm in diameter. lHow long would ittake to fill a conical vessel whose diameter at the base is 40 cm and depth 24 cm?of enath 25.cm

Write the place value of the underlined digit(a) 34,508 5 hundred or 500(c) 73,692

angles are equal. Find the measuu2. Inh the fig, suppose 2P an125 Rare supplementary angles and125. Find the measures of S.LR =

\left. \begin{array} { r } { 125 } \\ { + 250 } \\ \hline \end{array} \right.

1. The cost of 1 bicycle is 1475. Find the cost of 23 bicycles.

of 17x iि ही 6८ v (0. /ल्स्‍्क| 1 (22 7; (०, 7 /) 8 22 3(८0 4A1 3 ~ पेदि है. (०1!

1.The cost of 1 bicycle is1475. Find the cost of 23 bicycles

6. Which of the two rational numbers is greater-4 -8(i) = 07(v)4-7or to

Iveă

ive reasons for the following statements:(i) {(ii) 11, 64, 125):r is a perfect square and perfect cube, r s125)2, 3, 5, 7, 9, 11) # (x : x is a prime number, x &lt;12)

3 5th of a job is finished in 30 days. In how many days, will the remaining par efsExbe finished?tottans go out, of order, how longw

ne cost of 1 bicycle is1475 Find the cost of 23 bicycles

20. (32836 +16466)21. (46703 +11375)22. There are 54 balls in box A and 79 balls in box B. Estimate the total number ol balls in bomthe boxes taken together.

, The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Finvast of white washing the walls of the room and the ceiling at the raτ7,50 per m

contains 400 balls. If 20% balls are red, then find the number of red balls.

Find the number of ways of selecting 9 balls from 6 red balls, 5 white balls and 5blue balls if each selection consists of 3 balls of each colour.

A solid metallic cuboid of dimensions 9 m x 8m x 2 m is melted andrecast into solid cubes of edge 2 m. Find the number of cubes so formed.

ORtwo andSumit is 3 times as old as his son. Five yearent ?half times as old as his son. How old is Sumitat present

3. Ram has 7 chocolates more than three times thenumber of chocolates with Sumit. If Ram has 13chocolates, write an equation to denote thenumber of chocolates with Sumit.

110 yearThe ratio of the age of Sumit and Prakashis 2 3, Sumit is 6 year younger thanPrakash. Then find the ratio of their agesafter 6 years ?

ORSumit is 3 times as old as his son. Five years later, he shall be two and ahalf times as old as his son. How old is Sumit at present?

5. Nancy and Naina began their dance class at the same time. Naina finished her dance class6:30 p.m. and Nancy finished 45 minutes before Naina. At what time did Nancy finished herdance class?6. Mrs Sharma's office starts at 9:50 a.m. and closes at 7:10 p.m. Find the time duration of heroffice.

1 Saroj, Sheela, Moni, Shobha, and Sally took part in a cyele race Saroj fmishedfinished second to lsecond in the race?oni finished ahead of Shobha. Sally finished after Shobha. Whoast. Mau hoc 3 more marbles than Jath

011 Two angles measure (40-Đ°)" and (120+2a . If both team les are supplementary of oneother, find the vaseofa?

DBV &amp; 1 © ek इ b ‘ i e (75)

1. A man is 4 times his son's age. After 14 years, he will be twice as old as his son. Findtheir present age.

A man is 4 times as old as his son. After 16 years he will be only twice as old as his son.Find their present ages.

Which is correct?(a) Mean + Mode 3 (Mean + Med(b) Mean-Mode = 3 (Mean-Med(c) Mean - Mode 3 (Median - M(d) of these

Example 2 : Find five rational numbers between 1 and 2We can approach this problem in at least two ways.

A committee of 12 persons is to be formedfrom 9 women and 8 men. In how many wayscan this be done if at least five women have tobe included in a committee? In how many ofthese committees (i) women are in majority (ii)

(12) A committee of 12 persons is to be formed from9 women and 8 men. In how many ways canthis be done if at least five women have to beincluded in a committee? In how many of thesecommittees(a) women are in majority?(b) men are in majority?

lifference between the greatest five diFindnumber and the least five digit num112

Eht eircular cone of height 120 cm and radius 60 cmis placed in a right circular oylinder fiall oteight 130 cm such that it touches the bottom. Find the volume of water lett in the cyinder itwater of180 cus of the cylinder is equal to the radius of the cone

Solve for xek eatbtx

IfA and B are two sets such that n(A) = 20, n(B) = 25 and n(A U B) = 40, then find n(A 1n(4 )-20, n(B) = 25 and n(A U B) = 40

Therate of decay of the mass of a radio active1.ubstance at any time is k times its mass att time. Form the differential equationthasatisfied by the mass of the substance

If the probability of selecting a bulb from a bag isthen what is the probability of notselecting a bulb from the bag?SxCY

dropped in the vessel.A solid iron pole consists of a cylinder of height 220 cm and base diameter 24 cm, whichis surmounted by anothcr cylinder of height 60 cm and radius 8 cm. Find the mass of thepole, given that 1 cm of iron has approximately &g mass. (Use T 3.14)6.intionris the rtanding on

Iveă

ive reasons for the following statements:(i) {(ii) 11, 64, 125):r is a perfect square and perfect cube, r s125)2, 3, 5, 7, 9, 11) # (x : x is a prime number, x <12)

DBV & 1 © ek इ b ‘ i e (75)