Inactive Tutor answered 01/27/23
Tutor
New to Wyzant
13C0 +13C1 + 13C2 + 13C3 +13C4
= 1 + 13 + 78 + 286 + 13!/4!9!
= 378 + 13x12x11x10/4x3x2
= 378 +13x11x5
= 378 + 715
= 1,093
Katie C.
asked 02/14/15Inactive Tutor answered 01/27/23
13C0 +13C1 + 13C2 + 13C3 +13C4
= 1 + 13 + 78 + 286 + 13!/4!9!
= 378 + 13x12x11x10/4x3x2
= 378 +13x11x5
= 378 + 715
= 1,093
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