Quantitative Aptitude - Arithmetic Ability Questions

If tan2A + cot2A + 2 = x, then the value of x is

If  a+1/a = 3, then a3+1a3?

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

Select the odd word/letters/number/number pair 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 sum of a non-zero number and twenty times its reciprocal is 9. What is the number?

In a class consisting of boys and girls, there are 45 students. If three fifth of the students are boys, find the number of boys in the class.

Three consecutive natural numbers are such that the square of the greatest is greater than the product of the other two by 19. The smallest of these numbers is