alleryબે ગણના યોગગણમાં 30 સભ્યો છે. એક ગણમાં 20 અને બીજા ગણમાં 18 સભ્યો છે. બંનેમાં સામાન્ય હોય તેવા કેટલા સભ્યો છે?
A12
B10
C8
D6
Answer & Solution
Correct answer: C. 8
અતિવ્યાપ્તિ (ઓવરલેપ) = 20 + 18 - 30 = 8 સભ્યો બે વાર ગણાયા છે.
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