Math CentralQuandaries & Queries


Question from billie, a parent:

Ray makes an array that has 4 rows of 4 counters. He wants to make 2 more arrays using the same number of counters.He wants more than 1 counter in each row.What 2 arrays can he make? what 2 can he? What is an array anyway?

What is an array anyway?

An arrangement. The first one is specifically stated to have the counters in equal rows:


you are meant to assume that the others do too. (The problem does not state that 1 row of 16 is wrong


but I don't think that's what the teacher expects!)

Of course this is really a problems about finding factorizations.

Good Hunting!

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