Permutation & Combination · Question 16 · Easy
A locker code consists of 4 letters chosen from A, B, C, D, E and F, and letters may be repeated. How many different codes are possible?
- 1,024
- 360
- 1,296
- 24
Answer and explanation
Answer: C. 1,296
Explanation: Each of the 4 positions can be any of the 6 letters: 6 × 6 × 6 × 6 = 1,296.
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