Question

In a class of 50 boys,35 boys play carrom,20 boys play chess then the number of boys play both games is

Answer 1

Step-by-step explanation:

Total boys = 50

carrom khelne wale = 35

chess khelne wale = 20

n(Carrom) = 35

n(Chess) = 20

n(कै U चे) = n(कै.) + n(चे.) - n(कै. n चे.)

50 = 35 + 20 - n(कै. n चे.)

n(कै. n चे.) = 55 - 50 = 5