Wednesday, October 11, 2017

A math problem for fourth grade kids in Melbourne

“If 5 * 3 = 4
2 * 8 = 2
5 * 1 = 6
6 * 3 = 3

find the value of 1 * 7 = ?“ 
Sent to me by my daughter. It took me full fifteen minutes to solve it.

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