allery75 कर्मचारियों में से, 40 जावा (Java) जानते हैं, 35 पायथन (Python) जानते हैं और 10 इनमें से कोई भी भाषा नहीं जानते हैं। दोनों भाषाएं जानने वाले कर्मचारियों की संख्या कितनी है?
A20
B10
C25
D15
Answer & Solution
Correct answer: B. 10
65 कर्मचारी कम से कम एक भाषा जानते हैं, इसलिए दोनों भाषाएं जानने वाले = 40 + 35 - 65 = 10।
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