14 people buy item A while 13 people buy item B. Two people buy both items. How many people are there in all?
Given:
People who bought item A = 14
People who bought item B = 13
People who bought both A and B = 2
Solution:
Total distinct people = A + B − (A ∩ B)
=14 + 13 - 2 = 25
Alternate Method :
2 people bought both A and B
So:
Only A = 14 - 2 = 12
Only B = 13 - 2 = 11
Total distinct people = Only A + Only B + Both
=12 + 11 + 2 = 25
English
100 Questions
100 Marks
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14 people buy item A while 13 people buy item B. Two people buy both items. How many people are there in all?
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