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26 March, 02:44

The angle measures 22°, 62°, 118°, and 158° are written on slips of paper. You choose two slips of paper at random.

What is the probability that the angle measures are supplementary? Enter your answer as a fraction.

P =

+4
Answers (1)
  1. 26 March, 05:28
    0
    Answer: 1/3

    There are C (4,2) = 6 ways to choose a pair of numbers. Only 2 of those pairs are supplementary measures {22, 158} and {62, 118}. The probability is 2/6 = 1/3.
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