alleryसमुच्चय A में 30 सदस्य हैं और समुच्चय B में 20 सदस्य हैं, जिनमें 8 सदस्य दोनों में उभयनिष्ठ हैं। A या B में कितने सदस्य हैं?
A42
B50
C58
D38
Answer & Solution
Correct answer: A. 42
सम्मिलन (Union) = 30 + 20 - 8 = 42, क्योंकि उभयनिष्ठ सदस्यों की गिनती योग में दो बार हो जाती है।
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