Combinations

This collection contains resources from the website 1001mathproblems.com by Sian Zelbo. The focus is on number bonds with use of logic in puzzles involving combinations. 

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The sock problem

This combination problem builds up from combinations of three socks to six socks. Can students find a pattern and use it to work out how many socks would be needed to ensure a different pair was available each day for a month?

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