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प्रश्न
A group consists of 4 girls and 7 boys. In how many ways can a team of 5 members be selected if the team has(iii) at least 3 girls?
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उत्तर
If the team has at least 3 girls, then the number of ways of selecting 5 members =\[{}^4 C_3 \times^7 C_2 +^4 C_4 \times^7 C_1 = 84 + 7 = 91\]
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