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| Math Central | Quandaries & Queries |
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Question from angela, a student: What do we call the numbers that cannot be arranged into 2-row arrays? |
Angela,
Did you try some?
Two can be arranged in a 2 row array
Three can't be arranged in a 2 row array
Four can be arranged in a 2 row array
What about five and six?
Which numbers can be arranged in a two 2 array? Which can't?
Penny
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