Quantitative Aptitude - Arithmetic Ability Questions

The value of √0.0144 is

Two circles with centres P and Q touch each other externally. A straight line drawn through the point of contact intersects the circle with centre P at A and the circle with centre Q at B. Then, which of the following is true?

Select the odd word/letters/number/number pair from the given alternatives.

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

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

Calculate the sum of squares from 1 to 9.

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.

Simple interest on a sum of Rs 6800 for 18 months is Rs 2244. What is the rate (in percentage) of interest per annum?