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Out of 6 boys and 4 girls, a committee of 5 is to be formed. In how many ways can this be done if at most 2 girls are included?

a) C(6,3)×C(4,2)
b) C(6,2)×C(4,3)
c) C(6,4)×C(4,1)
d) C(6,1)×C(4,4)

User Divey
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Final answer:

To form a committee of 5 members from a group of 6 boys and 4 girls with at most 2 girls, we consider different scenarios and sum the combinations: no girls, 1 girl, and 2 girls. We calculate this using the combination formula and add the results of each scenario. c) C(6,4)×C(4,1) is correct answer.

Step-by-step explanation:

The question asks us to find out in how many ways we can form a committee of 5 members from 6 boys and 4 girls if at most 2 girls are included. This scenario requires using the combination formula, which is written as C(n, r) and calculates the number of ways to choose r elements from a set of n without regard to the order of selection.

We can have the following scenarios for the committee formation:

  • No girls: All 5 members will be boys. We choose 5 out of 6 boys, which is C(6, 5).
  • 1 girl: We choose 1 out of 4 girls and 4 out of 6 boys, which is C(4, 1) × C(6, 4).
  • 2 girls: We choose 2 out of 4 girls and 3 out of 6 boys, which is C(4, 2) × C(6, 3).

The total number of ways to form the committee is the sum of the number of ways for each scenario:

C(6, 5) + C(4, 1) × C(6, 4) + C(4, 2) × C(6, 3)

User Mina
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