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How-many-pairs-of-a-b-c-d-so-that-a-b-c-d-which-a-b-c-d-positive-integers-




Question Number 42909 by naka3546 last updated on 04/Sep/18
How  many  pairs of  (a, b, c, d)  so  that           a! +  b!  +  c!  =  d!  which   a, b, c, d  ∈  positive  integers .
Howmanypairsof(a,b,c,d)sothata!+b!+c!=d!whicha,b,c,dpositiveintegers.
Answered by MJS last updated on 04/Sep/18
only 1: 2!+2!+2!=3!
only1:2!+2!+2!=3!

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