Simple committee count: From a group of 6 men and 4 women, how many 4-person committees can be formed (no constraints)?
Aptitude
Permutation and Combination
Difficulty: Easy
Choose an option
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A210
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B225
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C195
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D185
Answer
Correct Answer: 210
Explanation
Introduction / Context:With no restrictions, the number of committees depends only on total group size and committee size. Gender labels do not matter for counting unless constraints are imposed.
Given Data / Assumptions:Total people = 10; committee size = 4.
Concept / Approach:Use combinations C(10, 4) since order of selection does not matter.
Step-by-Step Solution:
C(10, 4) = 10*9*8*7 / (4*3*2*1) = 210Verification / Alternative check:Symmetry: C(10, 4) = C(10, 6) = 210.
Why Other Options Are Wrong:225, 195, 185 do not equal C(10, 4).
Common Pitfalls:Using permutations instead of combinations.
Final Answer:210