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Maths Exercices
Variations without repetition
n = m = Vn,m=
Variations with repetition
n = m = VRn,m=
Permutations
n = Pn =
Circular permutations
n = (n-1)!=
Combinations without repetition
n = m = Cn,m=
Combinations with repetition
n = m = CRn,m=

How many different number combinations can we form for the football lottery using 8 ones, 4 of the letters x and 3 twos?

Solution: