Question 1082313
For any given group, the order is unimportant.
This means combinations and not permutations
are used.
C( 12,5 ) = {{{ 12! / ( 5!*( 12- 5 ))! }}}
{{{ 12! / ( 5!*7! ) }}}
{{{ ( 12*11*10*9*8 ) / ( 5*4*3*2*1 ) }}}
{{{ 95040 / 120 = 792 }}}
There are 792 ways to choose different groups
of 5 parents from 12 volunteers