Quantitative Aptitude - Arithmetic Ability Questions

What will be the value of r2+p2+s2-rp-ps-rs when r = 4, p = 2, s = 8?

Select the odd number from the given alternatives.

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

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

Which of the numbers given below is NOT rational?

What is the equation of the line whose y­-intercept is ­3/4 and making an angle of 45° with the positive x-­axis?

The least number that must be substracted from 63520 to make the result a perfect square is

To get number 40, the number 56/9 should be multiplied with