allery50 छात्रों की एक कक्षा में, 30 क्रिकेट खेलते हैं और 25 फुटबॉल खेलते हैं। 10 दोनों खेल खेलते हैं। कोई भी खेल न खेलने वाले छात्रों की संख्या कितनी है?
A5
B15
C20
D10
Answer & Solution
Correct answer: A. 5
कम से कम एक खेल खेलने वाले (सम्मिलन) = 30 + 25 - 10 = 45. कोई भी खेल न खेलने वाले = 50 - 45 = 5.
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