Quantitative Aptitude - Arithmetic Ability Questions

If (1 + cosA)/(1 - cosA) = x, then x is

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

A train of length, 245 metres, takes 20 seconds to cross a 355 metres long bridge. How much time (in seconds) will the train take to cross a 390 metres long platform?

In a number system, on dividing 11509 by a certain number, Mukesh gets 71 as quotient and 7 as remainder. What is the divisor?

On dividing a certain number by 342 we get 47 as remainder. If the same number is divided by 18, what will be the remainder ?

Find the greatest four digit number when divided by 8, 12, 16 leaves 2 as remainder in every case?

The average of ten numbers is 18. If one number is removed, then the average becomes 16, then what is the removed number?

Sonam's age after eight years will be half of her father's age. Eight years ago the ratio of their ages was 1 : 3. Find the present age of Sonam's father.