COMEDK · Maths · 4. Permutation Combination
From a group of 8 people 6 are to be chosen such that if a person \(A\) is chosen person \(B\) must also be chosen. The number of selections that can be made is
- A 8
- B 15
- C 7
- D 22
Answer & Solution
Correct Answer
(D) 22
Step-by-step Solution
Detailed explanation
The total number of people is 8. We need to choose 6 people from these 8. Let the set of people be \(\{A, B, C, D, E, F, G, H\}\). The condition is that if \(A\) is chosen, \(B\) must be chosen. This implies that the selection cannot contain \(A\) without \(B\). We analyze the…
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