Quantitative Aptitude - Arithmetic Ability Questions

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.

If cosαcosβ=m and cosαsinβ=n,then the value of m2+n2 cos2β is

If 4(2x - ­4) -­ 2 > 3x -­ 1 ≥ 4x - ­7, then x can take which of the following values?

What is the value of sin 75°+ sin 15°?

There are total 200 students in a school, of which 1/5th are boys. Find the number of girls in the school.

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

The average marks of 40 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 73 instead of 37. What is the value of correct average?