Question 17
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In how many ways can 5 letters be posted in 4 letter boxes?
- A 1,024 Correct
- B 625
- C 20
- D 120
Correct Answer: Option A
Each letter has 4 choices: 4⁵ = 1,024
Trap: 625 = 5⁴ gives each box a choice of letter.
Answer: 1,024
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