alleryਜੇਕਰ ਸੈੱਟ A ਵਿੱਚ 18 ਮੈਂਬਰ ਹਨ, ਸੈੱਟ B ਵਿੱਚ 12 ਅਤੇ A ਹਨ ਅਤੇ B ਵਿੱਚ 5 ਸਾਂਝਾ ਹੈ, ਤਾਂ ਯੂਨੀਅਨ ਵਿੱਚ ਕਿੰਨੇ ਮੈਂਬਰ ਹਨ?
A20
B25
C35
D30
Answer & Solution
Correct answer: B. 25
ਯੂਨੀਅਨ = 18 + 12 - 5 = 25, ਕਿਉਂਕਿ ਸਾਂਝੇ ਮੈਂਬਰਾਂ ਨੂੰ ਸਿਰਫ਼ ਇੱਕ ਵਾਰ ਗਿਣਿਆ ਜਾਣਾ ਚਾਹੀਦਾ ਹੈ।
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