Question 59
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4 shoes are taken from 5 different pairs. In how many ways can this be done so that no complete pair is taken?
- A 210
- B 120
- C 80 Correct
- D 130
Correct Answer: Option C
Choose 4 of the 5 pairs: 5C4 = 5
One shoe from each: 2⁴ = 16
5 × 16 = 80
Trap: 130 is the number with at least one pair.
Answer: 80
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