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10 June, 10:32

A study was conducted of the trend in the design of social robots. In a random sample of 113 social robots, 67 were built with legs only , 21 were built with wheels only , 9 were built with both legs and wheels , and 16 were built with neither legs nor wheels. Use the rule of complements to find the probability that a randomly selected social robot is designed with either legs or wheels or both.

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  1. 10 June, 14:29
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    97/113

    Step-by-step explanation:

    67 robots have legs only, 21 have wheels only, and 9 have both legs and wheels. The total number of robots with legs and/or wheels is 97.

    The probability is 97/113.
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