200 people in Bikaner were asked about two snacks: 110 like bhujia, 95 like ghewar and 20 like neither, as the note says. How many like exactly one of the two snacks?

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Accepted Answer

155. At least one = 200 - 20 = 180, so both = 110 + 95 - 180 = 25. Exactly one = (110 - 25) + (95 - 25) = 85 + 70 = 155. 25 is the both-group, 180 also counts them, and 195 forgets the 20 who like neither (it takes both as 5).

200 people in Bikaner were asked about two snacks: 110 like bhujia, 95 like ghewar and 20 like neither, as the note says. How many like exactly one of the two snacks?

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