Quantitative Aptitude - Arithmetic Ability Questions

The area of a circle is 38.5 cm2. Find its circumference (in cm).

O is an centre of a circle. P is an external point of it at distance of 13cm from O. The radius of the circle is 5cm. Then the length of a tangent to the circle from P upto the point of contact is

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

What is the value of 643 × 121289 - 169 ?

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

The length and breadth of a rectangle are 15 cm and 8 cm respectively. Find its area (in cm2)

A piece of work can be done by 16 men in 8 days working 12 hours a day. How many men are needed to complete another work, which is three times the first one, in 24 days working 8 hours a day?

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.