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OpenStudy (anonymous):
whats this factorial 17!/15! ?
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myininaya (myininaya):
\[\frac{17!}{15!}=\frac{17 \cdot 16 \cdot 15!}{15!}=17 \cdot 16 \]
OpenStudy (anonymous):
17x16=272.
OpenStudy (dumbcow):
\[\frac{17!}{15!} = \frac{17*16*15!}{15!} = 17*16\]
OpenStudy (anonymous):
\[17\times 16\]
OpenStudy (dumbcow):
im slow :)
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myininaya (myininaya):
we all almost used different notation for multiplication
OpenStudy (anonymous):
guess this was a popular one
OpenStudy (anonymous):
17X16
OpenStudy (amistre64):
17.16
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