Quantitative Aptitude - Arithmetic Ability Questions

The value of sinθ1+cosθ + sinθ1-cosθ

The sum of two positive integers is 80 & difference between them is 20. Then what is difference of squares of those numbers ?

If the angle of elevation of the sun decreases from 45° to 30°, then the length of the shadow of a pillar increases by 60m. The height of the pillar is

The mean of a distribution is 18 and the standard deviation is 4.5. What is the value of the coefficient of variation?

In the following question, select the odd letter/letters from the given alternatives.

Find the odd word / letter / number from the given alternative

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

If a.sin 45°.cos 45°.tan60° = tan 245° ­ cos60° then find the value of a ?