How many combination of 6 students can be made from a 40 student class?
n!/(n-r)!
n!/(n-r)!
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n!/(n-r)! is the formula for a permutation, nPr
here it is 40*39*38*37*36*35
the combination formula is n!/(r!(n-r)!), 40*39*38*37*36*35/(6*5*4*3*2*1)
feed into your calculator or google for ans
here it is 40*39*38*37*36*35
the combination formula is n!/(r!(n-r)!), 40*39*38*37*36*35/(6*5*4*3*2*1)
feed into your calculator or google for ans