Cutlery Drawer | NZ Maths

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Mum has a new kitchen. There is a drawer for cutlery which is 80 cm across and 40 cm deep.

She has four rectangular trays that are each 20 cm by 40 cm that she can put into the drawer. The four trays are for knives, forks, spoons, and big utensils.

In how many different ways can Mum put the four rectangular trays into the drawer?

Solution