Problem: 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?

View all: ESTERN BANK LTD | MANAGEMENT TRAINEE OFFICER (MTO) | WRITTEN QUESTION (MATH) SOLVE | 2007

Correct Answer: 20

Explanation:

Here, Total +All singles-All both= 15 + 11 —6= 26—6=20

Since 6 is counted twice with cricket & football player number,

so 6 has been deducted from the sum of cricket and football players’ number.

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