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Mathematics 9 Online
OpenStudy (anonymous):

Evaluate 5 C 4.

OpenStudy (anonymous):

5?

Nnesha (nnesha):

formula 4 combination \[\huge\rm nC_r = \frac{ n! }{ r!(n-r)! }\]

OpenStudy (anonymous):

is 5 correct

Nnesha (nnesha):

yep

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