Question 1078802
C(7,2) * C(9,2) * C(11,9)
{{{ ( 7! / ( 2!*( 7 - 2 )! )) * ( 9! / ( 2!*( 9 -2 )! )) * ( 11! / ( 9!*( 11-9 )! )) }}}
{{{ ( 7! / ( 2!*5! )) * ( 9! / ( 2!*7! )) * ( 11! / ( 9!*2! )) }}}
{{{ ( 7! * 9! * 11! ) / ( 2!*2!*2! * 5!*7!*9! ) }}}
{{{ 11! / ( 2!*2!*2!*5! ) }}}
{{{ ( 11*10*9*8*7*6 ) / 6 }}}
{{{ 11*10*9*8*7 = 55440 }}}
It can be done in 55,440 ways
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Definitely check my math &
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