Quantitative Aptitude - Arithmetic Ability Questions

Find the average of all prime numbers between 20 and 50.

Find the total surface area (in cm2) of a cube of side 3.5 cm.

The area and the length of one of the diagonals of a rhombus is 54 cm2 and 9 cm respectively. Find the length of its other diagonal (in cm).

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:3, what is the ratio of area of ΔADE and area of quadrilateral BDEC?

Find the least number that must be subtracted from 98534, to get a number exactly divisible by 824.

Which of the following pairs is NOT a pair of twin primes?

The square root of 6084 is

 In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.