M and N are two subsets of the universal set (U). If n(U) = 48, n(M) = 20, n(N) = 30 and n(MUN) = 40, find n(M \(\cap\) N)'

The graph of y = x\(^2\) and y = x intersect at which of these points?

Express 0.0000407, correct to 2 significant figures

If x varies inversely as y and y varies directly as z, what is the relationship between x and z?

Evaluate \(\frac{3\frac{1}{4} \times 1\frac{3}{5}}{11\frac{1}{3} - 5 \frac{1}{3}}\)