



 
Hi Marcus, The number of ways of choosing 6 objects from 42 objects is called 42 choose 6 and is written by mathematicians as but sometimes you see it designated _{42}C_{6}. The definition is where k! = k × (k1) × (k2) × (k3) × ··· × 1. (For example 5! = 5 × 4 × 3 × 2 × 1 = 120.) Thus After some simplification this becomes I'll let you do the arithmetic. Penny  


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