यदि (5) boys और (4) girls में से (4) member committee में कम से कम (2) girls चाहिए तो सही summation कौन-सा है?
If a (4)-member committee from (5) boys and (4) girls needs at least (2) girls, which summation is correct?
Explanation opens after your attempt
A. \(^{4}C_2{}^{5}C_2+^{4}C_3{}^{5}C_1+^{4}C_4{}^{5}C_0\)
Simple Explanation
Girls की संख्या (2), (3) या (4) हो सकती है और cases जोड़े जाते हैं। परीक्षा में at least वाले प्रश्नों में valid cases अलग लिखें। / The number of girls can be (2), (3), or (4), and the cases are added. In exams write valid cases separately in at least questions.
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