allery75 ਕਰਮਚਾਰੀਆਂ ਵਿੱਚੋਂ 40 Java ਅਤੇ 35 Python ਜਾਣਦੇ ਹਨ। 10 ਇਨ੍ਹਾਂ ਵਿੱਚੋਂ ਕੋਈ ਵੀ ਨਹੀਂ ਜਾਣਦੇ। ਦੋਵੇਂ ਜਾਣਨ ਵਾਲੇ ਕਿੰਨੇ ਹਨ?
A20
B10
C25
D15
Answer & Solution
Correct answer: B. 10
65 ਘੱਟੋ-ਘੱਟ ਇੱਕ ਭਾਸ਼ਾ ਜਾਣਦਾ ਹੈ, ਇਸ ਲਈ ਦੋਵੇਂ = 40 + 35 - 65 = 10।
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