A positive integer n satisfies the equation (n + 1)! + (n+2)! = 440-n!. Waht is the sum of the digits of n?
A positive integer n satisfies the equation (n + 1)! + (n+2)! = 440-n!. Waht is the sum of the digits of n?
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Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon
9th edition
131429248, 978-0131429246
