Quantitative Aptitude - Arithmetic Ability Questions

Select the odd letters from the given alternatives.

Identify the odd one out from the following:

If x + 1x = -2, then the value of x631 + 1x632?

Expand : S + 23

The third proportional of the following numbers (x - ­y)2, (x2 - y2)2 is

The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find the mean of marks of the students of three divisions of Class X.

Of the 3 numbers whose average is 72, the first is 2/7 times the sum of other 2. The first number is

What is the area (in sq cm) of a rectangle if its diagonal is 26 cm and one of its sides is 10 cm?