Subject
NSI নিয়োগ
Topic
জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা (NSI) (সহকারী পরিচালক) - ০৮.১০.২০২১
In a room of 36 people, 20 players play chase while 28 players play poker. How many players play both?
In a room of 36 people, 20 players play chase while 28 players play poker. How many players play both?
ক)
45খ)
20গ)
12ঘ)
28Explanation
আমরা জানি, মোট = n(A) + n(B) - both + none ⇒ 36 = 20 + 28 - both + 0 ⇒ 36 = 48 - both ⇒ both = 48 - 36 ⇒ both = 12Related questions
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