allery60 ਉਮੀਦਵਾਰਾਂ ਦੇ ਇੱਕ ਟੈਸਟ ਵਿੱਚ, 40 ਨੇ 1 ਪੇਪਰ ਪਾਸ ਕੀਤਾ, 35 ਨੇ 2 ਪੇਪਰ ਪਾਸ ਕੀਤਾ, ਅਤੇ 25 ਨੇ ਦੋਵੇਂ ਪੇਪਰ ਪਾਸ ਕੀਤੇ। ਸਿਰਫ਼ 2 ਪੇਪਰ ਪਾਸ ਕਰਨ ਵਾਲੇ ਕਿੰਨੇ ਲੋਕ ਸਨ?
A5
B8
C10
D15
Answer & Solution
Correct answer: C. 10
ਸਿਰਫ਼ ਪੇਪਰ 2 = n(P2) - n(P1 ∩ P2) = 35 - 25 = 10।
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