Quantitative Aptitude - Arithmetic Ability Questions

How many diagonals are there in octagon?

The difference between the ages of two sisters is 4 years when father's age is 54. Father is elder by 2 years to mother . Younger sister's age is half of mother's age. Find the age of elder sister.

Which of the set of three sides can't form a triangle?

A sum of money invested at simple interest becomes 13/10 of itself in 2 years and 6 months. What is the rate (in percentage) of interest per annum?

What is the reflection of the point (-1 , 3) in the line x = -4?

If 5(4 - x) - 4 > 5x -2 > 2x - 6, then the value of x is

What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the