Quantitative Aptitude - Arithmetic Ability Questions

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

In the following question, select the odd word pair from the given alternatives.

If 3:27 :: 5:?

What is the value of sec 5π/4?

What is the sum of the first 13 terms of an arithmetic progression if the 5th term is 1 and the 8th term is -17?

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

What will be the average of all the prime numbers before 19?

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