alleryਦੋ ਸੈੱਟਾਂ ਦੇ ਮੇਲ ਵਿੱਚ 30 ਮੈਂਬਰ ਹੁੰਦੇ ਹਨ। ਇੱਕ ਸੈੱਟ ਵਿੱਚ 20 ਅਤੇ ਦੂਜੇ ਵਿੱਚ 18 ਹੁੰਦੇ ਹਨ। ਉਹ ਕਿੰਨੇ ਮੈਂਬਰ ਸਾਂਝੇ ਕਰਦੇ ਹਨ?
A12
B10
C8
D6
Answer & Solution
Correct answer: C. 8
ਓਵਰਲੈਪ = 20 + 18 - 30 = 8 ਮੈਂਬਰਾਂ ਨੂੰ ਦੋ ਵਾਰ ਗਿਣਿਆ ਗਿਆ।
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