Mathematics Past Questions and Answers

Evaluate 0.21 x 0.072 x 0.00054 correct to 4 significant figure 0.006 x 1.68 x 0.003

The time taken to do a piece of work is inversely proportional to the number of men employed. If it takes 45 men to do a piece of work 5 days, how long will it take 25 men?

The length a person can jump is inversely proportional to his weight. If a 29kg person can jump 1.5m, find the constant of proportionality.

Find the values of x and y respectively if 8x – 5y =0 and 4x-7y+8=0

The sum of the first n terms of an arithmetic progression is 252.
If the first term is -16 and the last is 72, the number of terms is the series is.