Quantitative Aptitude - Arithmetic Ability Questions

Select the odd number from the given alternatives.

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.

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

If the length of one side and the diagonal of a rectangle are 5 cm and 13 cm respectively, then find its perimeter (in cm).

If 1/√(1 + cot2A) = x, then value of x is

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in x­axis to (­-4,2). The co-­ordinates of point R are

What is the value of a-b when a2+b2-6a-6b+18 = 0 ?

On a certain principal if the simple interest for two years is Rs 2800 and compound interest for the two years is Rs 2996, what is the rate of Interest?