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Mathematics, 10.05.2021 23:10 stodd9503

Let P(n) and S(n) denote the product and the sum, respectively, of the digits of the integer n. For example,
P(23) = 6 and
S(23) = 5. Suppose N is a two digit number such
that N = P(N) + S(N). What is the units digit of N?
Show your work please.

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