JEE Main 2022 Mathematics question

A class contains b boys and g girls. If the number of ways of selecting 3 boys and 2 girls from the class is 168, then b + 3g is equal to .

Answer: 17

Solution

, i.e. [b(b − 1)(b − 2)/6][g(g − 1)/2] = 168, so b(b −

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Question ID VK-034707