alleryગણ A માં 30 સભ્યો અને ગણ B માં 20 સભ્યો છે, જેમાં 8 બંનેમાં સામાન્ય છે. A અથવા B માં કેટલા સભ્યો છે?
A42
B50
C58
D38
Answer & Solution
Correct answer: A. 42
યોગ 30 + 20 - 8 = 42 છે, કારણ કે સરવાળામાં સામાન્ય સભ્યોની ગણતરી બે વાર થાય છે.
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