alleryત્રણ અલગ જૂથોમાં 20, 15 અને 10 સભ્યો છે જેમાં કોઈ સામાન્ય સભ્ય નથી. ત્રણેયમાં કુલ કેટલા સભ્યો છે?
A30
B40
C35
D45
Answer & Solution
Correct answer: D. 45
કોઈ ઓવરલેપ ન હોવાથી, યોગ એ સાદો સરવાળો છે: 20 + 15 + 10 = 45.
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