Quantitative Aptitude - Arithmetic Ability Questions

Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?

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

The order of rotational symmetry of a rectangle is

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 given alternatives.

ΔPQR is right angled at Q. If secP = 13/5, then what is the value of sinR ?

The age of A is three times the age of B. What is the ratio of the age of B to the age of A?

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

The number of sides of a regular polygon whose exterior angles are each 40 deg is