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Mathematics 22 Online
OpenStudy (anonymous):

What is 6!/2! ?

OpenStudy (ash2326):

@Brenda144441 Do you know how factorial is defined?

OpenStudy (anonymous):

\[ \frac {6!}{2!} = ^6P_4 \]

OpenStudy (ankitshaw):

see X! = x (x-1)(x-2)..... goes till 0! ... 0! is 1

OpenStudy (anonymous):

\[ ^6P_4 = 6\times 5\times 4\times 3 \]

OpenStudy (unklerhaukus):

\[\frac{6!}{2!}=\frac{6\times5\times4\times3\times2\times1}{2\times1}=\frac{6\times5\times4\times3\cancel{\times2\times1}}{\cancel{2\times1}}\]

OpenStudy (ankitshaw):

6!= 6X5X4X3X2 2! = 2X1 now dividing them u get 6X5X4X3 as stated above by @wio

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