Mathematics Past Questions and Answers

P = {3, 9, 11, 13} and Q = {3, 7, 9, 15} are subset of the universal set ξ = {1, 3, 7, 9, 11, 13, 15} find P^I ∩ Q^I

A train moving at a uniform speed covers 36km in 21 minutes. How long does it take to cover 60km?

The salary of a man was increased in the ratio 40:47. calculate the percentage increase in the salary

A regular polygon has 9 sides. What is the size of one of its exterior angles?

Simplify: \(\frac{2}{3xy} - \frac{3}{yz}\)