Question: Express as a single term from Pascal's triangle. a) 8C4 + 8C5 b) 16C7 - 15C6 Five numbers are chosen from 1 to 50. What

  1. Express as a single term from Pascal's triangle. a) 8C4 + 8C5 b) 16C7 - 15C6
  2. Five numbers are chosen from 1 to 50. What is the probability of exactly three of them being even numbers?

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