Question

ward robe with three pairs of Flash in 15 shirts. and how many different ways could he select a slack and shirt combination

Answer 1

To find the answer, we have to use combinations

`C^r_{n^{}}=(n!)/(r!\cdot(n-r)!)`

Where n = 15 and r = 3.

`C^3_(15)=(15!)/(3!\cdot(15-3)!)=(15\cdot14\cdot13\cdot12!)/(3\cdot2\cdot12!)=(2730)/(6)=455`

Hence, there are 455 ways to select.