then x equals to

• 1

• 13

• 27

• 25

If 'O' is the incentre of the Δ PQR. If ∠POR = 115° then value of ∠PQR is

• 40°

• 65°

• 50°

• 25°

The in-radius of triangle is 4 cm and its area is 34 sq cm. The perimeter of the triangle is

• 8.5 cm

• 17 cm

• 34 cm

• 20 cm

If  then the value of  is

• 2ⁿ

• 

• 

• 2

65.

A certain number of men can do a piece of work in 60 days. If there were 6 men more, the work can be finished 20 days earlier. The number of men working is

• 6

• 12

• 18

• 24

If a² = b + c,   b² = c + a,   c² = a + b, then the value of:

• 1

• 

• 3

• 4

The area of a Δ ABC is 10.8 cm². If CP = PB and 2AQ = QB, then the area of the Δ APQ is:

• 3.6 cm²

• 0.9 cm²

• 2.7 cm²

• 1.8 cm²

ABCD is a trapezium in which AD || BC and AB = DC = 10 m. Then the distance of AD from BC is

• 10√2 m

• 4√2 m

• 5√2 m

• 6√2 m

From the top of a building 60 m high, the angle of depression of the top and bottom of a tower are observed to be 30° and 60°. The height of the tower (in metre) is:

• 40

• 45

• 50

• 55

If a circle of radius 12 cm is divided into two equal parts by one concentric circle, then radius of inner circle is

• 6 cm

• 4 cm

• 

•