Here is a list of numbers
4 6 8 11 12 15 k k\,k 25
where k k\,k is a power of 2 greater than 8.
From the list, write down all the numbers that are powers of 2.
Give your answer in terms of kkk.
212 exam-style questions on Edexcel GCSE Maths Powers and Roots. Each one has a worked solution and a mark scheme showing where the marks go.