Mathematics Past Questions and Answers

Evaluate \(\sqrt{20}\times (\sqrt{5})^3\)

If P = {3, 7, 11, 13} and Q = {2, 4, 8, 16}, which of the following is correct

It is observed that \(1 + 3 = 2^2, 1 + 3 + 5 = 3^2, 1 + 3 + 5 + 7 = 4^2. \\If \hspace{1mm}1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 = P^2 find\hspace{1mm}P\)

Evaluate \(3.0\times 10^1 - 2.8\times 10^{-1}\)leaving the answer in standard form

A trader makes a loss of 15% when selling an article. Find the ratio, selling price : cost price