Reply To: Challenge Questions – 2

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#31022
KennethWilliams
Keymaster

Challenge Question 11

Lesson 17 showed a neat way of finding products like 74 x 76 where the first figures are the same and the last figures add up to 10.

What about products like 47 x 67 where the last figures are the same and the first figures add up to 10?

(And how would you find 94 x 67, and 32 x 36 by this method?)

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