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Question
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?
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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Solution
The correct option is B 3
A=english speaking
B=french speaking
AB=both english and french
N=none
15=A+B−AB+N (using concept of venn diagrams)
15=7+8−AB+3
AB=3
A=english speaking
B=french speaking
AB=both english and french
N=none
15=A+B−AB+N (using concept of venn diagrams)
15=7+8−AB+3
AB=3
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