a sand bucket contains 12 sea shells how many ways can u choose 3 of them is this permutation or combination?

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2006-09-21 09:31:59 · 4 answers · asked by lolale l 1 in Science & Mathematics ➔ Mathematics

(1/12) * (1/11) * (1/10)

whoops, .. that's more of a lottery type of calculation.

I'd believe #2 above.

2006-09-21 09:39:39 · answer #1 · answered by MK6 7 · 0⤊ 0⤋

12*11*10 divided by 3*2*1 =
220

2006-09-21 09:39:04 · answer #2 · answered by johnnylakis 4 · 0⤊ 0⤋

12C3 = (12!)/(3!(12 - 3)!)
12C3 = (12!)/(3! * 9!)
12C3 = 220 different ways

12P3 = (12!)/((12 - 3)!)
12P3 = (12!)/(9!)
12P3 = 1320 different ways

2006-09-21 13:34:58 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋

combination. Order is not important here.

2006-09-21 09:33:52 · answer #4 · answered by scruffy 5 · 0⤊ 0⤋