alleryਸੈੱਟ A ਵਿੱਚ 30 ਮੈਂਬਰ ਹਨ ਅਤੇ ਸੈੱਟ B ਵਿੱਚ 20 ਹਨ, 8 ਦੋਵਾਂ ਵਿੱਚ ਸਾਂਝਾ ਹੈ। A ਜਾਂ B ਵਿੱਚ ਕਿੰਨੇ ਮੈਂਬਰ ਹਨ?
A42
B50
C58
D38
Answer & Solution
Correct answer: A. 42
ਯੂਨੀਅਨ 30 + 20 - 8 = 42 ਹੈ, ਕਿਉਂਕਿ ਸਾਂਝੇ ਮੈਂਬਰਾਂ ਨੂੰ ਜੋੜ ਵਿੱਚ ਦੋ ਵਾਰ ਗਿਣਿਆ ਜਾਂਦਾ ਹੈ।
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