Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

(1) If P is the midpoint of seg AB and AB 7 cm, find AP

Answer»
2.

. Point M is the midpoint of seg AB. If AB = 8 then find the length of AM.

Answer»
3.

What is the area of a triangle with base 4 8 cm and height 3.8 mpage of a calender is 45 cm iong and 26 cm wide. What is its area?

Answer»

Area of triangle=(1/2)*base*height=(1/2)4.8*3.6=8.64 cm²

Area =length*breadthArea=45*25=1170 cm²

4.

10. Shivani hangs a picture that is 40 cm long and28 cm wide in the centre of a panel leaving a borderof 1 cm on all sides. Find the area of the paneluncovered by the picture.

Answer»
5.

In the figure find the length of the tangent CDif AP 3cm and PC 8cm9.

Answer»

Given,

AP=3cm

PC=8cm

AP=BP (tangents drawn from an external point)

BP=3cm (putting in the values)

now,

PC= BP + BC

8=3+BC (putting in the values)

BC=5cm

BC=CD (tangents drawn from an external point)

CD=5cm. (putting in the values)

6.

(10) The height of a cylinder is equal to the circumference of the base whoseradius is 2.1 cm. Find the curved surface area and its total surface22area. = 5

Answer»

Here curved surface area = h* h = h^2= as TSA= 2πr(r+h)

7.

Bar graph showing the number of cycles produced in a factory duringNumber of cycles produced2nd3rd4thWeekStudy the bar graph carefully and answer the questions given belo(1) In which week was the production maximum?(ii) In which week was the production minimum?1) What is the average production during these five weeks?

Answer»
8.

o. Shivani hangs a picture that is 40 cm long and28 cm wide in the centre of a panel leaving a borderof 1 cm on all sides. Find the area of the paneluncovered by the picture

Answer»
9.

The horizontal distance between 2 poles is 15 mtrs. The angle of depression of the top of the first pole as seen from the top of the second pole is 80. If the height of the second floor is 24 mts, find the height of the first floor.

Answer»
10.

If base circumference of cylinder is 2.8cm, Find the radius of cylinder

Answer»
11.

The height of a cylinder is 77 m and thecircumference of the base of the cylinder ism. Find the volume of the cylinder.

Answer»

Given:- the height of a cylinder is 77 m and the circumference of the base of the cylinder is 24 m.

∴2πr=24 m=>r=(12/π) m∴Volume of a cylinder=πr²h =π×(12/π)²×77 =3529.42 m³

12.

In the figure, find the length of the tangent CDif AP-3cm and PC-8cm.

Answer»

given,

AP=3cm

PC=8cm

AP=BP (tangents drawn from an external point)

BP=3cm (putting in the values)

now,

PC= BP + BC

8=3+BC (putting in the values)

BC=5cm

BC=CD (tangents drawn from an external point)

CD=5cm.

13.

9. In the igure, ind the ength of the tangent CDif AP=3cm and PC-8cm.

Answer»

We know that the lengths of the tangents from an external point to a circle are equal.

AP = PB = 3 cm and CD = BC

Since BC = PC – PB = 8 – 3 = 5 cm, CD = 5 cm

Hence, the length of CD is 5 cm.

14.

Howassuming that repetition of the digits is allowed?(ii) repetition of the digits is not allowed?many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5

Answer»
15.

9. In the figure, find the length of the tangent CDif AP=3cm and PC=8cm.

Answer»
16.

U.9. In the figure, find the length of the tangent CDif AP=3cm and PC=8cm.O

Answer»

Thank you for asking this question. Here is your answer:

AP = PB

= 3 cm

PC = 8 cm

PC = PB +BC

8 = 3 + BC

BC = 5

BC = CD

So CD will be 5 cm

17.

In the adjoining figure, Ois the centre and seg ABis a diameter. At thepoint C on the circle, thetangent CD is drawn.Line BD is a tangent tothe circle at the point B.Show that9.

Answer»
18.

10. Find the difference between simple interest and compound interest on 20000at 8 p.c.p.a.2kk

Answer»

Compound Interest=P( 1+ R/100)^T=20000(1+ 8/100)^1=₹21600simple interest=P×R×T/100=20000×8×1/100=₹1600Difference=21600-1600=₹20000

19.

Eliza deposited20,000 in a bank at the rate of 10% per annum. Draw a lineargraph showing the time and simple interest relationship. Also, find the simpleinterest for 4 years

Answer»
20.

Eliza deposited20,000 in a bank at the rate of 10% per annum. Draw a linegraph showing the time and simple interest relationship. Also, find the simpleinterest for 4 years

Answer»
21.

I1. Tthe four walls of the room.ength, breadth and height of a room are 5m, 4m and 3m respectively. Find the area of

Answer»

lateral surface area of cuboid = 2h ( l+ b ) 2*3 ( 5+4 ) 6 ( 9 )54 is the answer

Area of four walls = 2h(length+ breadth)2*3(4+5)6*954m^2

22.

11. The length, breadth and height of a room are 5m, 4m and 3m respectively. Find the area ofthe four walls of the room

Answer»
23.

II. The length, breadth and height of a room are 5m, 4m and 3m respectively. Find the area ofthe four walls of the room.

Answer»
24.

10. Factorise 8xN64y3Jo11. The length, breadth and height of a room are 5m, 4m and 3m respectively. Find the area ofthe four walls of the room

Answer»

Given that,length = 5 mbreadth = 4 mheight = 3 marea of wall = 2h (L+ b) = 2 * 3 (4 +5 ) = 6*9 = 54 sq m

25.

IJe The length, breadth and height of a room are 5m, 4m and 3m respectively. Find the area ofthe four walls of the room. 2h.tb)

Answer»
26.

, Find α for which point (α-2-u) lies insidey^2 + 4x = 0

Answer»

let alpha = aput x = aand y = -2-asoy² + 4x = 0(2+a)² + 4a = 0a² + 8a + 4 = 0a = [-8 + or - √(64 -16)]/2a = [ -8 + or - √ 48 ] /2a = [-8 + or - 4√3 ] /2a = [-4 + or - 2√3]

27.

a cylinder lies within a cube toching all vertical face and a cone lies inside the cylinder if their height are same with same base. find the ratio of their volume

Answer»

Assume that the length of all edges of the cube=x unitsFormula for volume of cube=x³ cube unitDue an occurrence that the cylinder is within the cube &it touches all the vertices faces of the cube.Therefore radius of the base of the cylinder & cone & height of cylinder of a cone=xVolume of the cylinder=π×{x/2}²×x=22/7×x³/411/14x³ cube unitVolume of cone should be=1/3π{x/2)²×x=11/42 cubic unitRequired ratio=volume of cube:volume of cylinder:volume of cone=x³:11/14x³:11/42x³=42:33:11

28.

resul11. Three cubes, each of side 6 cm, are joined end to end. Find the surface area of thetcuboid.iii) the 1lateral surface area and (iv) the length

Answer»

Length will be now 6+6+6=18cmBreadth=6cm, height=6cmSurface area of cuboid=2(lb+bh+hl)=2(108+36+108)=2(216+36)=2(252)=504sq.cm

29.

EXERCISE 15(A)1. State, if the triangles are possible with the following angles:0 20, 70 and 90(ii) 60° 60° and 50°(ii) 40°, 130° and 20°(iv) 125°, 40° and 15

Answer»

Triangle is possible only when sum of angle is 180°in (i), (ii) and (iv) it is possible but in iii) 60°+ 60° + 50° = 170° so triangle is not possible

thank you so much

30.

planted withide 3,360 by 32.

Answer»

3360÷ 32= 105

31.

15-60 and 7.80

Answer»

Rs. 15.60 + Rs. 7.80 = 23.4

rs15.60+rs7.80=rs23.4

32.

21 Find the aa ot chadad magien whoaof ide m

Answer»

Area of shaded region= area of square - area of 4 circle= 14*14-(4*22/7*7*7)

196-(615.734)= 419 as it cant be negative

33.

- 3. Find the 10h term.PQ is a chord of length 8 cm of a circle of radius5 cm. The tangents at P and Q intersect at apoint T (see figure). Find the length of thetangent TP17.니26BSE-100% SUCCESS IN MATHEMATICS-10

Answer»

Given radius, OP = OQ = 5 cmLength of chord, PQ = 4 cmOT ⊥ PQ,∴ PM = MQ =4 cm [Perpendicular draw from the centre of the circle to a chord bisect the chord]In right ΔOPM,OP2= PM2+ OM2⇒ 52= 42+ OM2⇒ OM2= 25 – 16 = 9Hence OM = 3cmIn right ΔPTM,PT2= TM2+ PM2→(1)∠OPT = 90º [Radius is perpendicular to tangent at point of contact]In right ΔOPT,OT2= PT2+ OP2→(2)From equations (1) and (2), we getOT2= (TM2+ PM2) + OP2⇒ (TM + OM)2= (TM2+ PM2) + OP2⇒ TM2+ OM2+ 2 × TM × OM = TM2+ PM2+ OP2⇒ OM2+ 2 × TM × OM = PM2+ OP2⇒ 32+ 2 × TM × 3 = 42+ 52⇒ 9 + 6TM = 16 + 25⇒ 6TM = 32⇒ TM =32/6 = 16/3Equation (1) becomes,PT2= TM2+ PM2 = (16/3)2+ 42 =(256/9) + 16 = (256 + 144)/9 = (400/9) = (20/3)Hence PT = 20/3Thus, the length of tangent PT is(20/3) cm.

thanks

34.

If three cubes are placed adjacently in a rowFind the ratio of the total surface area of nevuboid to that of the sum of the surface areaf three cubes

Answer»
35.

f) Find the surface area of Cuboid of dimensions 26 cms ; 20 cms , & 12 cms.

Answer»
36.

In triangle ABC if BC=CA angle C=80°, angle A and angle B =?

Answer»

Similar question is already answered.Please go through.

37.

In Fig. 7.49, angle B<angle A and angle C<angle D show that AD<BC

Answer»
38.

a unit test, the marks are awarded out of 80, Rohan obtained 65% marks. How many did he get?

Answer»

65%of 8065/100*80=52 marks

39.

Rohan mother is 26years older than him . The product of their ages(in years ) 3 years from now will be 360. We would like to find Rohans present age

Answer»

Let Rohan's age be x Therefore Rohan's mom's age is x+26 Now Roahn age after 3 yrs x+3 and his mothers age after three years x+29 Now we know (x+3)(x+29) = 360 x²+3x+29x+87 = 360 x²+32x+87=360 x²+32x=360-87 = 273 x(x+32)=273 After solving we get x=7 So, age of Rohan = 7 yrs The solution for how to get x is Take one factor of the equation x²+32x-273 = 0 First factorise .... Factors are x-7 and x+32 ...... So take any one factor and solve it and you will get two solutions of the quadratic equation...... X-7.....x=7 And x+32.....x=-32 Now put your logic age can't be in minus so x=7 is correct solution for this question...Hence solved

40.

5. Cards marked with numbers 13, 14, 15,.., 60 are placed in a box and mixed thoroughly. One card isdrawn at random from the box. Find the probability that number on the card drawn is(i) divisible by 5(ii)a number is a perfect square

Answer»
41.

B) Solve the following question (any one)In an A.P 17 term is 7 morc than its 10e term. Find the commorn a thrn simultaneously, then find sampie

Answer»

17th term = 10th term + 7

nth term, an = a+ (n - 1)d

a + 16d = a + 9d + 7 16d - 9d = 7 7d = 7 d = 1

Common difference = 1

42.

Find the area of the region PQRS in the given figure, where arcsdrawn with centers A, B, C and D intersect in pairs at mid-pointsP, Q, R and S of the sides AB, BC, CD and DA respectively of asquare ABCD of side 12cm. (Use π 3.14)

Answer»
43.

utive positive integers is 306. We need to find them) Rohan's mother is 26 years older than him3 years from now will be 360. We would like to find Rohan s preseniv) A train travelo

Answer»

let the age of organ be x, rohan mother=x+26 after 3 years, ( x+26+3)( x+3)=( x+29)( x+3)=x^2+3x+29x+87=360= x^2+32x=273;x^2+32x-273=0; x( x+32)-273=0; solve x=7; mother age =7+26=33

44.

3. ABCD is trapezium in which AB | CD. IfAD = BC, show thatangle B=angle A and angle C=anle D

Answer»
45.

(e) Find the sum of the greatest 8-digit, 7-digit and 6-digit numbers.

Answer»

Greatest 8-digit number 999999997-digit number 99999996 digit number 999999hence sum =110,999,997

46.

14. The number of possible outcomes when acoin is tossed 6 times is(A) 36(C) 64(B) 12(D) 32

Answer»

In one toss possible outcome is 2

In 6 toss possible outcome is 6×2 = 12

b) option is correct

number of coin is 1 in one coin two faceses .6 time tossed than 6×2 12

please like my answer if you find it helpful

47.

A coin is tossed 2 times. What are the total number of possibleoutcomes?

Answer»

Tossed two times Then the total number of outcomes{(H,H),(H,T),(T,H),(TT)}

48.

When a die is thrown, what are possible outcomes?

Answer»
49.

If two coins are tossed, then write all possible outcomes y

Answer»

the set of all possible outcome at the toss of two coin isS={HH,HT,TH,TT}

1)head, head2)tail, tail3) head, tail

50.

One card is drawn from a well shuffled deck of 52 cards. Find the probability of gettingi) Face cardii) Red cardiii) Ace cardiv) Spade card

Answer»

Probability = possible outcomes / total outcomes

(1) Number of face cards in deck of 52 cards = 12

Probability of getting face card = 12/52 = 3/13

(2) Number of red cards in deck of 52 cards = 26

Probability of getting redcard = 26/52 = 1/2

(3) Number of ace cards in deck of 52 cards = 4

Probability of getting acecard = 4/52 = 1/13

(4) Number of spade cards in deck of 52 cards = 13

Probability of getting spade card = 13/52 = 1/4