allery45 ਵਿਦਿਆਰਥੀਆਂ ਦੀ ਇੱਕ ਕਲਾਸ ਵਿੱਚ, 25 ਇਤਿਹਾਸ ਪੜ੍ਹਦੇ ਹਨ, 20 ਭੂਗੋਲ ਪੜ੍ਹਦੇ ਹਨ, ਅਤੇ 5 ਦੋਵਾਂ ਵਿੱਚੋਂ ਕੋਈ ਵੀ ਨਹੀਂ ਪੜ੍ਹਦੇ। ਕਿੰਨੇ ਵਿਦਿਆਰਥੀ ਦੋਵੇਂ ਪੜ੍ਹਦੇ ਹਨ?
A15
B10
C5
D0
Answer & Solution
Correct answer: C. 5
ਯੂਨੀਅਨ = 45 - 5 = 40। ਦੋਵੇਂ = 25 + 20 - 40 = 5।
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