A group of 80 people was surveyed about their exercise regimes. It was found that 20 jog, 22 swim and 18 go to the gym. It was also found that 10 people both jog and swim, 11 people go to the gym and jog, and 6 people both swim and go to the gym. Finally, it was found that 43 people do none of these activities. How many people do all 3?
#how many do all 3
lusty pagoda
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A group of 80 people was surveyed about their exercise regimes. It was found tha...
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