10 Maths Unicorn Quizz as on 13.1.23

The sum of the squares of two consecutive

natural numbers is 41. Represent this situation

in the form of a quadratic equation.

Answer explanation

• x = 7

• x = ± 7

• x = – 7

• x = 0

Answer explanation

• Both A and R are true and R is correct

  explanation of the A

• Both A and R are true, but R is not the correct

  explanation of the A

• A is true, but R is false

• A is false, but R is true

Answer explanation

Two persons Anil and Happy joined D.W.

Associates. Anil and Happy started with an

initial salary of Rs. 50000 and Rs. 64000 respectively

with annual increment of Rs. 2500 and Rs. 2000

each respectively. In which year will Anil start

earning more salary than Happy?

• 28th

• 29th

• 30th

• 27th

Answer explanation

32. Find the sum of first 15 multiples of 8.

• 840

• 1020

• 960

• 920

Answer explanation

Answer explanation

In the given figure, AP, AQ

and BC are tangents to the circle.

If AB = 5 cm, AC = 6 cm and

BC = 4 cm, then the length of AP

(in cm) is

• 7.5

• 15

• 10

• 0

Answer explanation

In the given figure, QR

is a common tangent to

the given circles, touching

externally at the point T.

The tangent at T meets QR at P.

If PT = 3.8 cm, then the length of QR(in cm) is

• 3.8

• 7.6

• 5.7

• 1.9

Answer explanation

The angle of elevation of the top of a pillar

from a point on the ground is 15°. On walking

100 m towards the pillar, the angle of elevation

becomes 30°. Find the height of the pillar.

• 25 m

• 50 m

Answer explanation

The tops of two poles of height 18 m and

10 m are connected by a wire of length l. If the

wire makes an angle of 30° with the horizontal,

then l is equal to

• 26 m

• 16 m

• 12 m

• 10 m

Answer explanation