14. एक कक्षा में 40 विद्यार्थी है। उनके विषय गणित या सांख्यिकी या दोनों है। यदि 30% विद्यार्थी दोनों विषय पढ़ते हैं तथा 42%
केवल सांख्यिकी तो गणित विषय कितने छात्र पढ़ते है ? केवल गणित कितने प्रतिशत छात्र पढ़ते हैं ?
40 students of a class study either Mathematics or Statistics or both. 30% students take both subjects and
42,% study only Statistics, How many students study Mathematics ? How many percent study only Mathe.
[Ans. 23; 27:41
matics?
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Answer:
30 percent students study math
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