SOLUTION: Can you please help me evaluate these two expressions? Thanks! expression 1 = ₉C₃ expression 2 = ₂₀C₃

Question 1081849: Can you please help me evaluate these two expressions? Thanks!
expression 1 = ₉C₃
expression 2 = ₂₀C₃
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!
expression 1 = ₉C₃
expression 2 = ₂₀C₃
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expression 1: ₉C₃ = 9!/(6!*3!) = (9*8*7)/(3*2) = 84
expression 2: ₂₀C₃ = 20!/(17!*3!) = (20*19*18)/(3*2) = 1140

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