A LITTLE SOMETHING WORTH KNOWING
A small discovery. Yours to pass on.
Math & LogicOne small ahaProduct15 × 2
Think it. Then flip it.✳ ahamoraTap to reveal ↻Back to the cue ↶
Math & LogicOne small aha
Your new aha30
✳ ahamoraReference ↗15 groups of 2 make 30. Reversing the factors, 2 × 15, gives the same product. Source: Multiplication table ↗