A survey in a class shows that 15 of the pupils play cricket, 11 play football and 6 play both cricket and football. How many pupils are there in the class, if everyone plays at least one of these games?
Created: 8 months ago
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Updated: 2 weeks ago
Let,
c = set of pupils who play cricket = 15
F = set of pupils who play football = 11
= pupils who play both cricket and football = 6
Since everyone plays at least one game, the total number of pupils is:
= 15+11-6
=20
Total number of pupils in the class = 20
Reazul Islam Dolan
3 months ago
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