Quantitative Aptitude - Arithmetic Ability Questions

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

The 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?

The area of a rectangle is 448 sq.m. If the length is more than the breadth by 12%, find the breadth.

In the following question, four number pairs are given. The number on left side of (–) is related to the number of 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 given alternatives.

Which pair is not similar to the other three?

Calculate the sum of squares from 1 to 9.

Pipes A and C can fill an empty cistern in 32 and 48 hrs, respectively while Pipe B can drain the filled cistern in 24hrs. If the three pipes are turned on together when the cistern is empty, how many hrs will it take for the cistern to be 2/3 full?

P can do a piece of work in 60 days & Q can do the same work in 50 days. Find the ratio of working efficiencies of P to Q.