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There are 154 chairs available.

Harry was asked to arrange all these chairs to form a hollow square.

Each side of the square must have an equal number of chairs.

(a) How many chairs will be there along each side of the hollow square?

(b) Find the maximum number of chairs that can be used to form the hollow square.

Notes to students:

If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12