alleryਇੱਕ ਸਕੂਲ ਵਿੱਚ, 80 ਵਿਦਿਆਰਥੀ ਕਲਾ, 60 ਸੰਗੀਤ ਅਤੇ 30 ਦੋਵੇਂ ਲੈਂਦੇ ਹਨ। ਕਿੰਨੇ ਵਿਦਿਆਰਥੀ ਇਹਨਾਂ ਦੋਵਾਂ ਵਿੱਚੋਂ ਘੱਟੋ-ਘੱਟ ਇੱਕ ਲੈਂਦੇ ਹਨ?
A90
B100
C105
D110
Answer & Solution
Correct answer: D. 110
ਘੱਟੋ-ਘੱਟ ਇੱਕ = n(ਕਲਾ ∪ ਸੰਗੀਤ) = 80 + 60 - 30 = 110।
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