Quantitative Aptitude - Arithmetic Ability Questions

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

If tanA = x, then x is

If the sum of digits is 9 and the difference between the digit in the ten's place and unit's place is 1, then the two-digit number is?

What is the diameter (in cm) of a sphere of surface area 154 sq cm?

In the given fig, ST||RP, then what is the value of supplementary angle y (in deg)?

What is the sum of the first 17 terms of an arithmetic progression if the first term is -20 and last term is 28?

If secθ + tanθ = 4, then secθ - tanθ = ?

The distance between the points (11,­5) and (k,0) is 13. Find k.