Quantitative Aptitude - Arithmetic Ability Questions

If A alone can do a job in 40 days then, in how many days can B alone do the job if together they can do the job in 8 days?

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

What is the reflection of the point (2, 3) in the line y = 4?

Δ DEF is right angled at E. If m∠F = 45°, then what is the value of 2 Sin F x Cot F?

If a-1a=1, then a2 + 1a2 ?

If (sinA + CosA)/(sin A - cos A) = 5/4, the value of (tan2A + 1)/(tan2A - 1) = ?

Find out the odd word/letters/number/number pair from the given alternatives.

If M = 0.1 + (0.1)2 + (0.01)2 and N = 0.3 + (0.03)2 + (0.003)2, then what is the value of M + N?