SOLUTION: How many ways can you select 2 out of 10 questions on a quiz

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Question 1027612: How many ways can you select 2 out of 10 questions on a quiz
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Ten chosen two at a time is given by
C%5B10%2C2%5D+=+%2810%2A9%29%2F%282%2A1%29+=+45 ways