Quantitative Aptitude - Arithmetic Ability Questions

Two circles with centres P and Q touch each other externally. A straight line drawn through the point of contact intersects the circle with centre P at A and the circle with centre Q at B. Then, which of the following is true?

The whole surface area of a pyramid whose base is a regular polygon is 340 cm2 and area of its base is 100 cm2 . Area of each lateral face is 30 cm2. Then the number of lateral faces is

In ΔABC, ∠B is right angle, D is the mid point of the side AC. If AB = 6 cm, BC = 8cm, then the length of BD is

Which of the following is the CORRECT option for the triangles having sides in the ratio of 3:4:6?

The sum of two digits of a number is 10. If the digits are interchanged, then its value increases by 18. Find the number.

What is the mean of first hundred natural numbers?

Sunil started his journey at 2:33:34 p.m. and reached the destination at 4:43:45p.m. Anil started the journey 45 min 27 secs after Sunil and reached the destination 37 mins 16 secs after him. How long did Anil take to complete his journey?

Simplify 81x2 - 49y29x + 7y