Quantitative Aptitude - Arithmetic Ability Questions

What number, from the following should be deducted from 1184 to make it exactly divisible by 21?

Among four students sitting in a row, average age of last three students is 20 years and the average age of first three students is 21 years. If the age of first student is 26 years, then what is the age (in years) of the last student?

Working together P, Q and R reap a field in 6 days. If P can do it alone in 10 days and Q in 24 days, in how many days will R alone be able to reap the field?

What is the highest common factor of 360 and 450?

For triangle ABC, find equation of median AD if co-ordinates of A, B and C are (-1,-3), (5,-4) and (3,2) respectively?

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

What is the value of sin ­-300°?

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