alleryसंच A मध्ये 30 घटक आहेत आणि संच B मध्ये 20 घटक आहेत, ज्यांपैकी 8 दोन्हीमध्ये सामाईक आहेत. A किंवा B मध्ये किती घटक आहेत?
A42
B50
C58
D38
Answer & Solution
Correct answer: A. 42
संयोग संच 30 + 20 - 8 = 42 आहे, कारण बेरजेमध्ये सामाईक घटक दोनदा मोजले जातात.
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