Quantitative Aptitude - Arithmetic Ability Questions

What is the area (in sq cm) of a rhombus if the lengths of its diagonals are 25 cm and 20 cm?

If P = 22 + 62 + 102 + 142 + ... 942 and Q = 12 + 52 + 92 + ... 812, then what is the value of P – Q?

Four pairs of words are given. Find the odd one out.

What is the reflection of the point (5, 3) in the line y = -2?

Points P , Q and R are on a circle such that ∠PQR = 40° and ∠QRP = 60° . Then the subtended angle by arc QR at the centre is

If the arithmetic mean of two numbers is 7 and the geometric mean of the same two numbers is 2√10. Then find the numbers x and y respectively, such that x>y.

A 145 m long train crosses a 655 m long bridge in 36 seconds. What is the speed of the train?

If the ratio of cost price and selling price be 10:11, then the profit percentage is