Quantitative Aptitude - Arithmetic Ability Questions

Four numbers A, B, C and D are such that their overall average is 16. The average of A and B is 9.5. The average of C and D is

If the diameter of a circle is 35 cm, then what will be its circumference (in cm)?

O is the centre of a circle and AB is the tangent to it touching at B . If OB = 3 cm. and OA = 5 cm , then the measure of AB in cm

Find the curved surface area (in cm2) of a hemisphere of diameter 7 cm.

In triangle ABC, ∠ABC = 90°. BP is drawn perpendicular to AC. If ∠BAP = 30°, then what is the value (in degrees) of ∠PBC?

What is the time taken by a 180 m long train running at 54 kmph to cross a man standing on a platform?

Calculate the difference between the square of the largest and smallest two-digit prime numbers.