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Zariah Boyle
Mathematics
7 December, 11:31
Evaluate 11C7 and 12P3.
11C7 = ?
12P3 = ?
+2
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Shea Best
7 December, 11:40
0
11C7
= 11 x 10 x 9 x 8 x 7! / (7!) (4!)
= (11 x 10 x 9 x 8) / (4 x 3 x 2 x 1)
= 7920 / 24
= 330
12P3
= 12 x 11 x 10 x 9! / (9!)
= (12 x 11 x 10)
= 1320
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