81279 + Interview Questions in Mathematics QA in Mathematics

1.	18. The record of a weather station shows that out of the past 250 consecutive daysforecasts were correct 175correct.times. Find the probability that on a given day, the forecast was
Answer» 1

Discussion

2.	A copper wire, when bent in the form ofa square,encloses an areatof484 cm2If the same wire is bent in the form of a circle, find the area enclosedby it
Answer»

Discussion

3.	The area ofa oquar fild is 101400 square metersFind the length of one side of the field.
Answer» The answer is 201 metres

Discussion

4.	the area of the shaded region in Fig. 2, where aand D intersect in pairs at mid-points P Q, R and S of the sides AB, BC,A respectively ofa square ABCD of side 1 2 cm. [Use -3Findrcs drawn with centre.14]
Answer»

Discussion

5.	the time stequired ng the thoita di stunc of 34okm at the Same Se
Answer»

Discussion

6.	Q.10.In how much time a train 160m longng at a speed of 90 Km/hr will cross a platform of 240 nmwmuch timeatrain 160mlong.
Answer» to cover whole platform train has to travel 240+160=400mt=d/s=400*3600/(90×1000)=16 seconds

Discussion

7.	2. Awire is bent in the form of a square of side 30 m. Ifit is re-bent in the form ofa circlewill be its radius?(Take Ď = 3.14)
Answer» Perimeter of square wire=Circumference of circular wire4side=2πr430=2(22/7)r60*7/22=r210/11=r

Discussion

8.	1 A square and a rectangle are equal in area. The perimeter of the rectangle is 26 cm. What is its arThe area ofa rectangle
Answer» area of square = area of rectangle area of square = x^2 let length of rectangle be (a) cm and width be (b) cm. area ofrectangle =ab perimeter of rectangle =26 cm so 2(a+b)=26 a+b=13so,are of rectangle=121=12 cm^2 lif ength =11 cm and width =2 cm area of rectangle=112 =22 cm ^2 if length =10 cm and width =3 cm so,are of rectangle=103=30 cm^2 if length =9 cm and width =4 cm so,are of rectangle=9*4=36 cm^2 if length =8 cm and width =5 cm so,are of rectangle=40 cm^2 if length =7 cm and width =6 cm so,are of rectangle=42 cm^2 Area of sqauare can be found be 1^1=1 cm^2 2^2=4 cm^2 3^2=9 cm^2 4^2=16 cm^2 5^2=25 cm^2 6^2=36 cm^2 7^2=49 cm^2 there is one common area=36 cm^2

8.

1 A square and a rectangle are equal in area. The perimeter of the rectangle is 26 cm. What is its arThe area ofa rectangle

Answer»

area of square = area of rectangle

area of square = x^2

let length of rectangle be (a) cm and width be (b) cm.

area ofrectangle =a*b

perimeter of rectangle =26 cm

so

2(a+b)=26

a+b=13so,are of rectangle=12*1=12 cm^2

lif ength =11 cm

and width =2 cm

area of rectangle=11*2 =22 cm ^2

if length =10 cm and width =3 cm

so,are of rectangle=10*3=30 cm^2

if length =9 cm and width =4 cm

so,are of rectangle=9*4=36 cm^2

if length =8 cm and width =5 cm

so,are of rectangle=40 cm^2

if length =7 cm and width =6 cm

so,are of rectangle=42 cm^2

Area of sqauare can be found be

1^1=1 cm^2

2^2=4 cm^2

3^2=9 cm^2

4^2=16 cm^2

5^2=25 cm^2

6^2=36 cm^2

7^2=49 cm^2

there is one common area=36 cm^2

Discussion

9.	4. A bathroomin the form ofa cuboid ofdmensions 3mx3mĂ6m How many squaretiles are required to fix to all the faces if side of a tile is 5 em?
Answer»

Discussion

10.	17 the acute angles of a right angled triangle have measures 30 and 60'. then the length of the sideopposite to 30" angle is half the length of the hypotenuse.** *
Answer» this property is called 30 60. 90 thm

Discussion

11.	t is required to make a closed cylindrical tank of height 1 m and basrom a metal sheet. How many square metres of the sheet are requie diaredfThe inner diameter ofa cross
Answer»

Discussion

12.	Thevolume of a right circular cone is 9856 cm. If the diameter of the base is 28 cfindon height of the cone n/h (0igf(ii) curved surface area of the cone(ii) slant height of the cone
Answer»

Discussion

13.	7 The volume of a right circular cone is 9856 cm. If the diameter of the base is 28 cm,find(i) height of the cone(i) slant height of the coneiii) curved surface area of the coneOrrat
Answer»

Discussion

14.	The volume of a right circular cone is 9856 cm3. If the diameter of the base is 28 cmfindheight of the cone 5n7%(ii) curved surface area of the cone(ii) slant height of thecone
Answer»

Discussion

15.	2 Determine the prime factorization of each of the following(a) 13915 (6) 556920 (C) 45470971Lo ng time factorisation met
Answer» a) 13915/5=2783; 556920/5=111384; a)13915/5=2783;556920/5=111384

15.

2 Determine the prime factorization of each of the following(a) 13915 (6) 556920 (C) 45470971Lo ng time factorisation met

Answer»

a) 13915/5=2783; 556920/5=111384;

a)13915/5=2783;556920/5=111384

Discussion

16.	loot loo=
Answer» 100 +100 =200 simple answer 100+100=200is coming answer 200 is right Answer. 200 is the correct answer 200 is the right answer 100+100=200is correct answer 100+100 =200 is right Answer 200 is the correct answer 100+100=200 so simple 200 is a right answer 100+100=200 Ans right 200 is the right answer 100+100=200is answer 200 is the right answers 200 is the best answer 200 is the right answer 100 + 100 = 200is a answer 200 is the best answer 100+100=200 is the right answer 200 is the right answer 100+100=200 is the right answer 100+100 =200 is the right answer 200 is the correct answer 200 is the right answers 💯+💯 =200 hai bhai simpal 100+100 200 ho ga simple

16.

loot loo=

Answer»

100 +100 =200 simple answer

100+100=200is coming answer

200 is right Answer.

200 is the correct answer

200 is the right answer

100+100=200is correct answer

100+100 =200 is right Answer

200 is the correct answer

100+100=200 so simple

200 is a right answer

100+100=200 Ans right

200 is the right answer

100+100=200is answer

200 is the right answers

200 is the best answer

200 is the right answer

100 + 100 = 200is a answer

200 is the best answer

100+100=200 is the right answer

200 is the right answer

100+100=200 is the right answer

100+100 =200 is the right answer

200 is the correct answer

200 is the right answers

💯+💯 =200 hai bhai simpal

100+100 200 ho ga simple

Discussion

17.	metre?4 The area of a right-angled triangle is 6 cm:. If its base meusures 4 cm and its hypotenuse measures5 crm, find its perimcter
Answer» thanks

Discussion

18.	segiheht johing A-2,Binto four equal partstafind the area ofa rhombus if its vertices are (3,0), (4, 5), (-1, 4) and (-2,-1 ) taken inerder (Hint : Area of a rhombus(product of its diagonals)
Answer»

Discussion

19.	The volume of a right circular cone is 9856 cm3. If thediameter of the base is 28cm, findheight of the cone
Answer»

Discussion

20.	+0. Thevolumeofarightcircularconeis9856cm'.Ifthediameterofthebaseis28cm,findheightofthe cone.
Answer»

Discussion

21.	Ais.SeeUhit/2,LongAnswerType Q. No. 2.e.24. Write the effect of Indo-Pak war of 1965.Ans. See Unit 8, Long Answer Type Q. No.2.R-
Answer» The 1965 Indo-Pak war, which went on from April to September in 1965, was the second major conflict India faced with Pakistan after the First Kashmir War that took place in 1947-49. War ended in a United Nations mandated ceasefire and the subsequent issuance of the Tashkent Declaration

Discussion

22.	0.3 \quad ( b ) \frac { 1 } { 3 } \quad ( c ) 3 \%
Answer» 1/3 = 0.330.3 = 0.303% = 3/100 = 0.031:5 = 1/5 = 0.2 Hence, 1/3 is greatest. thanks

22.

0.3 \quad ( b ) \frac { 1 } { 3 } \quad ( c ) 3 \%

Answer»

1/3 = 0.330.3 = 0.303% = 3/100 = 0.031:5 = 1/5 = 0.2

Hence, 1/3 is greatest.

thanks

Discussion

23.	(c) oQ.5. Write whether the given equation is linear or not(b) no(a) yes(e) can't say(d) none of thell crichet match between India and Pakituation in the for
Answer» x(x+5) = -x(3-x) +7x² + 5x = -3x +x² +78x -7 = 0degree is 1 so it is linear

Discussion

24.	990 ^ { \circ } \quad ( b ) \operatorname { cos } 90 ^ { \circ } \quad ( c ) \operatorname { cos } 0 ^ { \circ }
Answer»

Discussion

25.	pEE P=11,33 10% 298 рдкрд╛ рен et
Answer» U = P ∪ P' U = {1, 2, 3, 7, 8, 9, 10, 11, 12, 13}

25.

pEE P=11,33 10% 298 рдкрд╛ рен et

Answer»

U = P ∪ P'

U = {1, 2, 3, 7, 8, 9, 10, 11, 12, 13}

Discussion

26.	8. Ifthe HCF of 408 and 1032 is expressible in the form of 1032m -408x5, find m.
Answer»

Discussion

27.	the cost of fencing a rectangular field at Rs7.50 pee metre is 600. If it its length is 24m find its breadth?
Answer» thanks

Discussion

28.	4. Express - 4 as a rational number with denominator :(i) - 15(ii) 18
Answer»

Discussion

29.	In Δ RST, 2S = 90°, < T = 30°, RT = 12 crm then find RS and ST
Answer» sin30°=RS/RTRS=RTsin30°=12(1/2)=6 cos30=ST/RTST=RTcos30°=12(√3/2)=6√3

29.

In Δ RST, 2S = 90°, < T = 30°, RT = 12 crm then find RS and ST

Answer»

sin30°=RS/RTRS=RTsin30°=12(1/2)=6

cos30=ST/RTST=RTcos30°=12(√3/2)=6√3

Discussion

30.	he volume -crmcrved sustee
Answer» Volume of cylinder = (pie)r²hvolume of cylinder=5346 cm³height of cylinder =21 cm 5346cm³=22/7×r²×215346 cm² =22×r²×3r²=5346/(22×3)r²=81r=9 cmC.S.A of cylinder=2(pie)r²hCSA = 2×22/7×9×9×21CSA=110322 cm²

30.

he volume -crmcrved sustee

Answer»

Volume of cylinder = (pie)r²hvolume of cylinder=5346 cm³height of cylinder =21 cm

5346cm³=22/7×r²×215346 cm² =22×r²×3r²=5346/(22×3)r²=81r=9 cmC.S.A of cylinder=2(pie)r²hCSA = 2×22/7×9×9×21CSA=110322 cm²

Discussion

31.	\cos 60^{\circ} \times \cos 30^{\circ}+\sin 60^{\circ} \times \sin 30^{\circ}
Answer»

Discussion

32.	मान ज्ञात करो-\sin 60^{\circ} \times \tan 30^{\circ} \times \cos 45
Answer»

Discussion

33.	triangle.C11. Ifthe diagonals of a parallelogram are equal, prove that it is a
Answer»

Discussion

34.	30 - \{ 8 \div ( 2 \times 3 - 4 ) \}
Answer» 30-{8÷(6-4)}30-426

Discussion

35.	1m=. cm
Answer» 1m=100cm

35.

1m=. cm

Answer»

1m=100cm

Discussion

36.	30 \div 6+10-2 \times 5
Answer» According to BODMAS, 5+10-2*5 5+10-10 5

36.

30 \div 6+10-2 \times 5

Answer»

According to BODMAS,

5+10-2*5

5+10-10

5

Discussion

37.	30 \div 5 \times 3 %2B 4 - 3 =
Answer» 19 This your answer Ab Mujhe like do

Discussion

38.	Express 343 as a power of 7.
Answer» 👍👏

Discussion

39.	Express 343 as the power of 7.
Answer» Expressing 343 as power of 77² = 497³ = 343 👌👍

39.

Express 343 as the power of 7.

Answer»

Expressing 343 as power of 77² = 497³ = 343

👌👍

Discussion

40.	Express 1024 as a power of 2.
Answer» 1024 = 2^10 is the answer of the given question. Hey, here is your answer:-1024 = 2 x 512 = 2 x 2 x 256 = 2 x 2 x 2 x 128 = 2 x 2 x 2 x 2 x 64 = 2 x 2 x 2 x 2 x 2 x 32 = 2 x 2 x 2 x 2 x 2 x 2 x 16 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 8 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 4 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 2^10 22=4,23=8,24=16,25=32,26=64,27=128,28=256,29=512210=1024answer is 210 1024=2^10 is the best answer 1024 = 2^10 is the right answer express 1024 as a power of 2= 2^10

40.

Express 1024 as a power of 2.

Answer»

1024 = 2^10 is the answer of the given question.

Hey, here is your answer:-1024 = 2 x 512 = 2 x 2 x 256 = 2 x 2 x 2 x 128 = 2 x 2 x 2 x 2 x 64 = 2 x 2 x 2 x 2 x 2 x 32 = 2 x 2 x 2 x 2 x 2 x 2 x 16 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 8 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 4 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 2^10

2*2=4,2*3=8,2*4=16,2*5=32,2*6=64,2*7=128,2*8=256,2*9=5122*10=1024answer is 2*10

1024=2^10 is the best answer

1024 = 2^10 is the right answer

express 1024 as a power of 2= 2^10

Discussion

41.	Express 32 as a power of 2.
Answer» 2^5or 2power5 i.e 2×2×2×2×2 As we know 32 = 2×2×2×2×2

41.

Express 32 as a power of 2.

Answer»

2^5or 2power5 i.e 2×2×2×2×2

As we know 32 = 2×2×2×2×2

Discussion

42.	If diagonals of a cyclic quadrilateral are diameters of the circle through the vertices ofthe quadrilateral, prove that it is a rectangle.8 Ifthe
Answer»

Discussion

43.	Express 4-3 as a power with 2.
Answer» rajveer saves rp 87 per day .how much money will he save in 3 years , when there is no leap year 1/64now 64= 2^6now1/64= 2^-6 2^-6 is the right answer 4-31/4(4)4=6 to the power 4=8-2=1/8to the power2 it's only answer is correct

43.

Express 4-3 as a power with 2.

Answer»

rajveer saves rp 87 per day .how much money will he save in 3 years , when there is no leap year

1/64now 64= 2^6now1/64= 2^-6

2^-6 is the right answer

4-31/4(4)4=6 to the power 4=8-2=1/8to the power2

it's only answer is correct

Discussion

44.	%. Find the height of the solid circular cylinder of total surface area 660 em2 and radius 5 cm.660x1-=21]2Ă22Ă5
Answer» If you find this solution helpful, Please give it a 👍

Discussion

45.	Express : (i) 1024 as a power of 2.
Answer» (1024)^2 = 1, 048, 576 1024 as a power of 2= 2^10 2^10 is the right answer 1024 as a power of 2= 2^ 10 (1024)²=1024×10241048576 is the right answer 2^10 is the correct answer of the given question hopes it helps is the correct answer of the given question 2^10 is the correct answer 2^10 is a correct answer 1024 as a power of 2 1024^2 is 1,048,576 1024×1024 1,048,576

45.

Express : (i) 1024 as a power of 2.

Answer»

(1024)^2 = 1, 048, 576

1024 as a power of 2= 2^10

2^10 is the right answer

1024 as a power of 2= 2^ 10

(1024)²=1024×10241048576 is the right answer

2^10 is the correct answer of the given question hopes it helps is the correct answer of the given question

2^10 is the correct answer

2^10 is a correct answer

1024 as a power of 2 1024^2 is 1,048,576 1024×1024 1,048,576

Discussion

46.	ligh Order Thinking Sks thoe. The area of square A is 25 em2. The perimeterof square B is 12 cm. What is the area andperimeter of square C'?
Answer» area 64cm^2 and perimeter 32cm area=64 and perimeter =32 side of A=5,B=3 so side of C=8 area of C=64

46.

ligh Order Thinking Sks thoe. The area of square A is 25 em2. The perimeterof square B is 12 cm. What is the area andperimeter of square C'?

Answer»

area 64cm^2 and perimeter 32cm

area=64 and perimeter =32

side of A=5,B=3 so side of C=8 area of C=64

Discussion

47.	Express 43 as a power with the base2
Answer» 4^(-3) =(2²)^(-3) =2^(-6)

47.

Express 43 as a power with the base2

Answer»

4^(-3)

=(2²)^(-3)

=2^(-6)

Discussion

48.	The base and height of a triangle are inthe ratio 4 5. If its area is 1000 em2find its base and height.
Answer» let the base be=4x height =5x area of triangle=1/24x 5x 90=10x² x²=90/10 x²=9 x=3 b=43=12cm h=53=15cmplease like the solution 👍 ✔️

48.

The base and height of a triangle are inthe ratio 4 5. If its area is 1000 em2find its base and height.

Answer»

let the base be=4x

height =5x

area of triangle=1/2*4x *5x

90=10x²

x²=90/10

x²=9

x=3

b=4*3=12cm

h=5*3=15cmplease like the solution 👍 ✔️

Discussion

49.	6. In a parallelogram, the altitude is twice the length of base. Its area is 450 em2. Find the length ofbase and altitude.
Answer» Let base = xAltitude = 2x Area of parallelogram = b × h450cm sq. = (x) × (2x)450cm sq. = 2x^2450cm sq. ÷ 2= x^2225cm sq. = x^215cm = x Base= x = 15cmAltitude = 2x = 2 × 15cm = 30cm Please discribe briefly

49.

6. In a parallelogram, the altitude is twice the length of base. Its area is 450 em2. Find the length ofbase and altitude.

Answer»

Let base = xAltitude = 2x

Area of parallelogram = b × h450cm sq. = (x) × (2x)450cm sq. = 2x^2450cm sq. ÷ 2= x^2225cm sq. = x^215cm = x

Base= x = 15cmAltitude = 2x = 2 × 15cm = 30cm

Please discribe briefly

Discussion

50.	The curved surface area of a right circular evlinder of height 14 cm is 88 em2. Find thediameter of the base of the cylinder
Answer» CSA of cylinder=2πrhh=14 cm2πrh=88 cm²r= (887)/(22214) r= 1 cmdiameter= 12= 2 cm

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

18. The record of a weather station shows that out of the past 250 consecutive daysforecasts were correct 175correct.times. Find the probability that on a given day, the forecast was

A copper wire, when bent in the form ofa square,encloses an areatof484 cm2If the same wire is bent in the form of a circle, find the area enclosedby it

The area ofa oquar fild is 101400 square metersFind the length of one side of the field.

the area of the shaded region in Fig. 2, where aand D intersect in pairs at mid-points P Q, R and S of the sides AB, BC,A respectively ofa square ABCD of side 1 2 cm. [Use -3Findrcs drawn with centre.14]

the time stequired ng the thoita di stunc of 34okm at the Same Se

Q.10.In how much time a train 160m longng at a speed of 90 Km/hr will cross a platform of 240 nmwmuch timeatrain 160mlong.

2. Awire is bent in the form of a square of side 30 m. Ifit is re-bent in the form ofa circlewill be its radius?(Take Ď = 3.14)

1 A square and a rectangle are equal in area. The perimeter of the rectangle is 26 cm. What is its arThe area ofa rectangle

4. A bathroomin the form ofa cuboid ofdmensions 3mx3mĂ6m How many squaretiles are required to fix to all the faces if side of a tile is 5 em?

17 the acute angles of a right angled triangle have measures 30 and 60'. then the length of the sideopposite to 30" angle is half the length of the hypotenuse.** *

t is required to make a closed cylindrical tank of height 1 m and basrom a metal sheet. How many square metres of the sheet are requie diaredfThe inner diameter ofa cross

Thevolume of a right circular cone is 9856 cm. If the diameter of the base is 28 cfindon height of the cone n/h (0igf(ii) curved surface area of the cone(ii) slant height of the cone

7 The volume of a right circular cone is 9856 cm. If the diameter of the base is 28 cm,find(i) height of the cone(i) slant height of the coneiii) curved surface area of the coneOrrat

The volume of a right circular cone is 9856 cm3. If the diameter of the base is 28 cmfindheight of the cone 5n7%(ii) curved surface area of the cone(ii) slant height of thecone

2 Determine the prime factorization of each of the following(a) 13915 (6) 556920 (C) 45470971Lo ng time factorisation met

loot loo=

metre?4 The area of a right-angled triangle is 6 cm:. If its base meusures 4 cm and its hypotenuse measures5 crm, find its perimcter

segiheht johing A-2,Binto four equal partstafind the area ofa rhombus if its vertices are (3,0), (4, 5), (-1, 4) and (-2,-1 ) taken inerder (Hint : Area of a rhombus(product of its diagonals)

The volume of a right circular cone is 9856 cm3. If thediameter of the base is 28cm, findheight of the cone

+0. Thevolumeofarightcircularconeis9856cm'.Ifthediameterofthebaseis28cm,findheightofthe cone.

Ais.SeeUhit/2,LongAnswerType Q. No. 2.e.24. Write the effect of Indo-Pak war of 1965.Ans. See Unit 8, Long Answer Type Q. No.2.R-

0.3 \quad ( b ) \frac { 1 } { 3 } \quad ( c ) 3 \%

(c) oQ.5. Write whether the given equation is linear or not(b) no(a) yes(e) can't say(d) none of thell crichet match between India and Pakituation in the for

990 ^ { \circ } \quad ( b ) \operatorname { cos } 90 ^ { \circ } \quad ( c ) \operatorname { cos } 0 ^ { \circ }

pEE P=11,33 10% 298 рдкрд╛ рен et

8. Ifthe HCF of 408 and 1032 is expressible in the form of 1032m -408x5, find m.

the cost of fencing a rectangular field at Rs7.50 pee metre is 600. If it its length is 24m find its breadth?

4. Express - 4 as a rational number with denominator :(i) - 15(ii) 18

In Δ RST, 2S = 90°, &lt; T = 30°, RT = 12 crm then find RS and ST

he volume -crmcrved sustee

\cos 60^{\circ} \times \cos 30^{\circ}+\sin 60^{\circ} \times \sin 30^{\circ}

मान ज्ञात करो-\sin 60^{\circ} \times \tan 30^{\circ} \times \cos 45

triangle.C11. Ifthe diagonals of a parallelogram are equal, prove that it is a

30 - \{ 8 \div ( 2 \times 3 - 4 ) \}

1m=. cm

30 \div 6+10-2 \times 5

30 \div 5 \times 3 %2B 4 - 3 =

Express 343 as a power of 7.

Express 343 as the power of 7.

Express 1024 as a power of 2.

Express 32 as a power of 2.

If diagonals of a cyclic quadrilateral are diameters of the circle through the vertices ofthe quadrilateral, prove that it is a rectangle.8 Ifthe

Express 4-3 as a power with 2.

%. Find the height of the solid circular cylinder of total surface area 660 em2 and radius 5 cm.660x1-=21]2Ă22Ă5

Express : (i) 1024 as a power of 2.

ligh Order Thinking Sks thoe. The area of square A is 25 em2. The perimeterof square B is 12 cm. What is the area andperimeter of square C'?

Express 43 as a power with the base2

The base and height of a triangle are inthe ratio 4 5. If its area is 1000 em2find its base and height.

6. In a parallelogram, the altitude is twice the length of base. Its area is 450 em2. Find the length ofbase and altitude.

The curved surface area of a right circular evlinder of height 14 cm is 88 em2. Find thediameter of the base of the cylinder

2. Awire is bent in the form of a square of side 30 m. Ifit is re-bent in the form ofa circlewill be its radius?(Take Ď = 3.14)

4. A bathroomin the form ofa cuboid ofdmensions 3mx3mĂ6m How many squaretiles are required to fix to all the faces if side of a tile is 5 em?

In Δ RST, 2S = 90°, < T = 30°, RT = 12 crm then find RS and ST

%. Find the height of the solid circular cylinder of total surface area 660 em2 and radius 5 cm.660x1-=21]2Ă22Ă5