Divide the LCM of 15abc and 20a\(^2\)bc by their HCF
Solve \(5^{2(x - 1)} \times 5^{x + 1} = 0.04\)
Correct 241.34(3 x 10\(^{-3}\))\(^2\) to 4 significant figures
Find the mean deviation of 1, 2, 3 and 4
Simplify and express in standard form \(\frac{0.00275 \times 0.00640}{0.025 \times 0.08}\)
