In a group of 15 people, 7 read french ,8 read english while 3 of them read none of these two.How many of them read french and english both?
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2 of them can read french and english both
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total number of people= 15
people cannot read any language = 3
people who read = 15-3 =12
number of people who can read both = 8+7-12 = 15-12 = 3
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