Quantitative Aptitude - Arithmetic Ability Questions

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.

In the following question, select the odd letter/letters from the given alternatives.

In the following question, select the odd word pair from the given alternatives.

If the angles of a triangle are in the ratio of 2 : 5 : 8, then find the value of the largest angle.

Which of the following will give a terminating decimal?

Find the mean of the first 6 prime numbers?

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

The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?