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.

Solve the following quadratic equations by factorization:16x-1=15x+1; x≠0, -1

Answer» Solve the following quadratic equations by factorization:



16x-1=15x+1; x0, -1
2.

If 1 is a zero of the polynomial P(a) = x2a2 - 2xa + 3x - 2 . Then x = ___________

Answer»

If 1 is a zero of the polynomial P(a) = x2a2 - 2xa + 3x - 2 . Then x = ___________


3.

If D, E and F are respectively the midpoints of sides AB, BC and CA of ΔABC then what is the ratio of the areas of ΔDEF and ΔABC?

Answer»

If D, E and F are respectively the midpoints of sides AB, BC and CA of ΔABC then what is the ratio of the areas of ΔDEF and ΔABC?

4.

Following balances are taken from the books of Niranjan. Prepare Trading and Profit and Loss Account and Balance Sheet for the year ended 31st March, 2019: Particulars ₹ Particulars ₹ Capital 12,00,000 Drawings 2,10,000 Opening Stock 4,50,000 Plant and Machinery 2,40,000 Furniture 15,000 Purchases 29,50,000 Sales 43,50,000 Insurances 15,000 Purchases Return 40,000 Sales Return 70,000 Rent 50,000 Trade Expenses 20,000 Salaries 2,40,000 Wages 4,00,000 Bad Debts 10,000 6% Investments 5,00,000 Sundry Debtors 4,00,000 Sundry Creditors 1,90,000 Bills Payable 8,000 Cash 1,22,000 Advertisement Expenses 60,000 Miscellaneous Income 12,000 Patents 48,000 Adjustments:(i) Closing Stock ₹ 7,50,000.(ii) Depreciate Machinery by 10% and Furniture by 20%.(iii) Wages ₹ 50,000 and salaries ₹ 20,000 are outstanding.(iv) Write off ₹ 50,000 as further Bad Debts and create 5% Provision for Doubtful Debts. Also, create a reserve for discount on Debtors 2%.(v) Investments were made on 1st July, 2018 and no interest has been received so far.

Answer» Following balances are taken from the books of Niranjan. Prepare Trading and Profit and Loss Account and Balance Sheet for the year ended 31st March, 2019:




















































































Particulars




Particulars



Capital
12,00,000

Drawings
2,10,000

Opening Stock
4,50,000

Plant and Machinery
2,40,000

Furniture
15,000

Purchases
29,50,000

Sales
43,50,000

Insurances
15,000

Purchases Return
40,000

Sales Return
70,000

Rent
50,000

Trade Expenses
20,000

Salaries
2,40,000

Wages
4,00,000

Bad Debts
10,000

6% Investments
5,00,000

Sundry Debtors
4,00,000

Sundry Creditors
1,90,000

Bills Payable
8,000

Cash
1,22,000

Advertisement Expenses
60,000

Miscellaneous Income
12,000

Patents
48,000




Adjustments:

(i) Closing Stock ₹ 7,50,000.

(ii) Depreciate Machinery by 10% and Furniture by 20%.

(iii) Wages ₹ 50,000 and salaries ₹ 20,000 are outstanding.

(iv) Write off ₹ 50,000 as further Bad Debts and create 5% Provision for Doubtful Debts. Also, create a reserve for discount on Debtors 2%.

(v) Investments were made on 1st July, 2018 and no interest has been received so far.
5.

Find the sum of the first 31 terms of an AP whose n th term is given by 3 + 2n/3

Answer»
Find the sum of the first 31 terms of an AP whose n
th term is given by 3 + 2n/3
6.

Dylan is organizing a curling tournament. The sports complex charges ₹ 116/ h for the ice rental. Dylan has booked it for 7h. He will charge each of the 14 teams in the tournament an entrance fee which is more than per hour charges . How much should he charge from each team in order to make a profit?

Answer»

Dylan is organizing a curling tournament. The sports complex charges ₹ 116/ h for the ice rental. Dylan has booked it for 7h. He will charge each of the 14 teams in the tournament an entrance fee which is more than per hour charges . How much should he charge from each team in order to make a profit?


7.

Prove that (4, – 1), (6, 0), (7, 2) and (5, 1) are the vertices of a rhombus. Is it a square?

Answer»

Prove that (4, – 1), (6, 0), (7, 2) and (5, 1) are the vertices of a rhombus.

Is it a square?

8.

Consider A = (x+y+z3012) = (−azx+z−y). The value of a is _________________ ___

Answer»

Consider A = (x+y+z3012) = (azx+zy). The value of a is _________________


___
9.

A cone is 8.4cm high and radius of its base is 2.1cm . It melted and recast into a sphere . Find the radius of sphere

Answer» A cone is 8.4cm high and radius of its base is 2.1cm . It melted and recast into a sphere . Find the radius of sphere
10.

If straight linex cos(alpha) + y sin(alpha) = ptouches the curvex2/a2+ y2/b2= 1, then prove thata2cos2(alpha) + b2sin2(alpha) = p2.

Answer» If straight linex cos(alpha) + y sin(alpha) = ptouches the curvex2/a2+ y2/b2= 1, then prove thata2cos2(alpha) + b2sin2(alpha) = p2.
11.

If PT is a tangent at T to a circle whose centre is O and OP=17 cm, OT=8 cm, Find the length of the tangent segment PT.

Answer»

If PT is a tangent at T to a circle whose centre is O and OP=17 cm, OT=8 cm, Find the length of the tangent segment PT.

12.

If one root of the equation 2x2+ax+6=0 is 3, then find the value of a .

Answer»

If one root of the equation 2x2+ax+6=0 is 3, then find the value of a .


13.

Find the third vertex of a triangle, if two of its vertices are at (−3, 1) and (0, −2) and the centroid is at the origin.

Answer» Find the third vertex of a triangle, if two of its vertices are at (−3, 1) and (0, −2) and the centroid is at the origin.
14.

Solve the following pair of linear equations graphically: 2x+3y=2 and x-y=1

Answer»

Solve the following pair of linear equations graphically: 2x+3y=2 and x-y=1

15.

The cost of 50 grams of cotton candy is Rs.20. Complete the following table based on this data if weight is directly proportional to price. Weight of cotton candy(In grams)50150210Price in rupees208072 [3 MARKS]

Answer»

The cost of 50 grams of cotton candy is Rs.20. Complete the following table based on this data if weight is directly proportional to price.

Weight of cotton candy(In grams)50150210Price in rupees208072 [3 MARKS]

16.

For what value of 'k' are the following points (7,-2), (5, 1), (3, k) collinear ?

Answer»

For what value of 'k' are the following points (7,-2), (5, 1), (3, k) collinear ?



17.

5. A bag contains 4 balls. 2 balls are drawn at random and are to be white. What is the probability that all balls are white ?

Answer» 5. A bag contains 4 balls. 2 balls are drawn at random and are to be white. What is the probability that all balls are white ?
18.

40. ABCD is a rectangular field. A vertical lamo post of height 12m stands at corner A. If angle of elevation of its top from B is 60 and from C is 45 then area of field is

Answer» 40. ABCD is a rectangular field. A vertical lamo post of height 12m stands at corner A. If angle of elevation of its top from B is 60 and from C is 45 then area of field is
19.

The line xa+yb−1ab=0, will meet the y- axis at ____.

Answer»

The line xa+yb1ab=0, will meet the y- axis at ____.

20.

In the given figure, D is a point on side BC of ΔABC such that. Prove that AD is the bisector of ∠BAC.

Answer»

In the given figure, D is a point on side BC of ΔABC such that. Prove that AD is the bisector of ∠BAC.



21.

If 81 x2 - k = (9x + 15)(9x - 15), whats the value of k __

Answer»

If 81 x2 - k = (9x + 15)(9x - 15), whats the value of k


__
22.

The line segment XY is parallel to side AC of Δ ABC and it divides the triangle into two parts of equal areas. Find the ratio BXAB.

Answer»

The line segment XY is parallel to side AC of Δ ABC and it divides the triangle into two parts of equal areas. Find the ratio BXAB.


image



23.

Show that the lines 2x+5y=1, x-3y=6 and x+5y+2 are concurrent?

Answer» Show that the lines 2x+5y=1, x-3y=6 and x+5y+2 are concurrent?
24.

Reversing the digits of a two digit number the number obtained is 9 less than 3 times the original number if the difference of these two numbers is 45 find the original number.

Answer» Reversing the digits of a two digit number the number obtained is 9 less than 3 times the original number if the difference of these two numbers is 45 find the original number.
25.

The catalog price of a Music system is Rs. 24000. The shopkeeper gives a discount of 8% on the list price. He gives a further off season discount of 5% on the balance. But sales tax at 10% is charged on the remaining amount. Then final price he has to pay for music system is

Answer»

The catalog price of a Music system is Rs. 24000. The shopkeeper gives a discount of 8% on the list price. He gives a further off season discount of 5% on the balance. But sales tax at 10% is charged on the remaining amount. Then final price he has to pay for music system is


26.

In the following figure, ABC is a right angled triangle in which ∠A = 90°, AB = 21 cm and AC = 28 cm. Semi-circles are described on AB, BC and AC as diameters. Find the area of the shaded region.

Answer» In the following figure, ABC is a right angled triangle in which ∠A = 90°, AB = 21 cm and AC = 28 cm. Semi-circles are described on AB, BC and AC as diameters. Find the area of the shaded region.



27.

Find the discriminant of each of the following equations:(i) 2x2-7x+6=0(ii) 3x2-2x+8=0 (iii) 2x2-52x+4=0(iv) 3x2+22x-23=0(v) x-12x-1=0(vi) 1-x=2x22x2−7x+6=02x2−7x+6=0

Answer» Find the discriminant of each of the following equations:



(i) 2x2-7x+6=0

(ii) 3x2-2x+8=0

(iii) 2x2-52x+4=0

(iv) 3x2+22x-23=0

(v) x-12x-1=0

(vi) 1-x=2x22x27x+6=02x27x+6=0
28.

what is meant by the term †an gent?

Answer» what is meant by the term †an gent?
29.

In the given figure, O is the centre of a circle and PT is the tangent to the circle. If PQ is a chord such that ∠ QPT = 50o then ∠ POQ = ? (a) 100o (b) 90o (c) 80o (d) 75o

Answer»

In the given figure, O is the centre of a circle and PT is the tangent to the circle. If PQ is a chord such that QPT = 50o then POQ = ?

(a) 100o (b) 90o (c) 80o (d) 75o

30.

Question 7 Which of the following figures satisfy the following property? -Has two pairs of congruent adjacent sides.

Answer» Question 7
Which of the following figures satisfy the following property?
-Has two pairs of congruent adjacent sides.







31.

The angles of depression of the top and bottom of a tower as seen from the top of a 60√3-m-high cliff are 45∘ and 60∘ respectively. Find the height of the tower.

Answer»

The angles of depression of the top and bottom of a tower as seen from the top of a 603-m-high cliff are 45 and 60 respectively. Find the height of the tower.

32.

How do we identify two points P and Q on a line segment AB such that AP : PQ = 1 : 2 and PQ : QB = 4 : 5?

Answer» How do we identify two points P and Q on a line segment AB such that AP : PQ = 1 : 2 and PQ : QB = 4 : 5?
33.

3. ABCD is a parallelogram and APQ is a straight line meeting BC at P and DC produced at Q. Prove that Bp×DQ=AB×BC.

Answer» 3. ABCD is a parallelogram and APQ is a straight line meeting BC at P and DC produced at Q. Prove that Bp×DQ=AB×BC.
34.

Represent ((A’∪ B’) – A )’ using a Venn diagram

Answer»

Represent ((A’ B’) – A )’ using a Venn diagram

35.

Find the area of the region bounded by the following hyperboles using integration:y²-ax=a²y²+ax=a²

Answer» Find the area of the region bounded by the following hyperboles using integration:
y²-ax=a²
y²+ax=a²
36.

For the following set of numbers, find the median: [3 MARKS] 10, 75, 3, 81, 17, 27, 4, 48, 12, 47, 9, 15

Answer»

For the following set of numbers, find the median: [3 MARKS]
10, 75, 3, 81, 17, 27, 4, 48, 12, 47, 9, 15

37.

Find the value of x, y in the pair of equation given below, where x≠0 & y≠0.2x+3y=135x−4y=−2

Answer»

Find the value of x, y in the pair of equation given below, where x0 & y0.

2x+3y=13

5x4y=2

38.

Find the two natural numbers which differ by 5 and the sum of whose squares is 97.

Answer»

Find the two natural numbers which differ by 5 and the sum of whose squares is 97.

39.

A cylindrical rod whose height is 8 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be(a) 4(b) 3(c) 6(d) 8

Answer» A cylindrical rod whose height is 8 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be



(a) 4



(b) 3



(c) 6



(d) 8
40.

If the points (−1,2,1), (2,1,0), (λ,3,2) are collinear, then which of the following can be correct ?

Answer»

If the points (1,2,1), (2,1,0), (λ,3,2) are collinear, then which of the following can be correct ?

41.

Evaluate:5cos260°+4sec230°-tan245°sin230°+cos230°

Answer» Evaluate:



5cos260°+4sec230°-tan245°sin230°+cos230°
42.

Question 16 A piece of wire 20 cm long is bent into the form of an arc of a circle subtending an angle of 60∘ at its centre. Find the radius of the circle.

Answer» Question 16
A piece of wire 20 cm long is bent into the form of an arc of a circle subtending an angle of 60 at its centre. Find the radius of the circle.
43.

Question 3 (i) Find the roots of the following equations: (i) x−1x=3,x≠0

Answer» Question 3 (i)
Find the roots of the following equations:
(i) x1x=3,x0
44.

Question 92y+53=263−y

Answer» Question 9

2y+53=263y


45.

2.13113111311113 ... is (a) an integer (b) a rational number (c) an irrational number (d) none of these

Answer»

2.13113111311113 ... is

(a) an integer (b) a rational number

(c) an irrational number (d) none of these

46.

1.If the segment joining the points (a, b), (c, d) subtends a right angle at the origin, then(1) ac -bd-0(3) ab +cd0(2) ac bd -0(4) ab - cd 0

Answer» 1.
If the segment joining the points (a, b), (c, d) subtends a right angle at the origin, then
(1) ac -bd-0
(3) ab +cd0
(2) ac bd -0
(4) ab - cd 0
47.

Mohan takes 16 days less than Manoj to do a piece of work. If both working together can do it in 15 days, in how many days will Mohan along complete the work ?

Answer»

Mohan takes 16 days less than Manoj to do a piece of work. If both working together can do it in 15 days, in how many days will Mohan along complete the work ?

48.

Using factor theorem, show that g(x) is a factor of p(x), whenp(x) = x4 – x2 – 12, g(x) = x + 2

Answer» Using factor theorem, show that g(x) is a factor of p(x), when

p(x) = x4 – x2 – 12, g(x) = x + 2
49.

A die is numbered in such a way that its faces show the number 1, 2, 2, 3, 3, 6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws:What is the probability that the total score is(i) even? (ii) 6? (iii) at least 6?

Answer»

A die is numbered in such a way that its faces show the number 1, 2, 2, 3, 3, 6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws:





What is the probability that the total score is



(i) even? (ii) 6? (iii) at least 6?

50.

The image of point (4, -6) under the operation Mx.My is

Answer»

The image of point (4, -6) under the operation Mx.My is