We are given two numbers A and B, both only comprising of the digit 9. A has N 9's and B has M 9's. For example, if A has 4 9's and B has 3 9's, then A = 9999 and B = 999.
Given N and M, can you find the value of (A x B) without actually multiplying them?
Shown below are some examples to tickle your grey cells -
Given N and M, can you find the value of (A x B) without actually multiplying them?
Shown below are some examples to tickle your grey cells -
9 x 9 = 81
99 x 9 = 891
99 x 99 = 9801
999 x 9 = 8991
999 x 99 = 98901
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