What fraction must be subtracted from the sum of \(2\frac{1}{6}\) and \(2\frac{7}{12}\) to give \(3\frac{1}{4}\)?

Simplify \(\left(\frac{16}{81}\right)^{-\frac{3}{4}}\times \sqrt{\frac{100}{81}}\)

Express \(\frac{7}{19}\) as a percentage, correct to one decimal place

If \(104_x = 68\), find the value of x

The ages of three men are in the ratio 3:4:5. If the difference between the ages of the oldest and youngest is 18 years, find the sum of the ages of the thre...

Which of the following numbers is perfect cube?

Find the missing number in the addition of the following numbers, in base seven \(\begin{matrix} 4 & 3 & 2 & 1\\ 1 & 2 & 3 & 4\\ * & * & * & *\\ 1&2&3&4&1 \e...

simplify \(\frac{10}{\sqrt{32}}\)

Express 398753 correct to three significant figures