allery50 विद्यार्थ्यांच्या एका वर्गात, 30 जण गणिताचा अभ्यास करतात, 25 जण विज्ञानाचा अभ्यास करतात आणि 15 जण दोन्हीचा अभ्यास करतात. यांपैकी कशाचाही अभ्यास न करणारे किती विद्यार्थी आहेत?
A5
B12
C10
D8
Answer & Solution
Correct answer: C. 10
Union = 30 + 25 - 15 = 40 विद्यार्थी, म्हणून 50 - 40 = 10 विद्यार्थी कशाचाही अभ्यास करत नाहीत.
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