Question

*Each student from a group of students plays at least one game. 55 play football, 35 play hockey, 50 play cricket, 20 play football and hockey, 15 play football and cricket, 12 play hockey and cricket and 8 play all the three games. Find the total number of students in the group.*

1️⃣ 85
2️⃣ 101
3️⃣ 100
4️⃣ 140
​

Answer 1

Answer:

total number = 55 + 35 + 50 - 20 - 15 - 12 + 8

= 101 Ans

Formula is

n(A U B U C) = n(A) + n(B) + n(C) - n( A v B) ........+ n( A v B v C)

Answer 2

Answer:

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