Question
How many people belong to both X and W
group? Read the directions carefully and answer the following. In a group of 60 people, all of them belong to at least one group- X, W and Z. 12 people belong only to the Z group. 10 People belong to all the three groups. 4 people have joined the X and Z group but not the W group. 30 people belong to the Z group. 4 people have joined only the X group. 6 people have joined only the W group.Solution
Number of people who belong to both X and W group = (20 +10) = 30
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