Question 14
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How many 4-letter codes can be made?
I. The letters are taken from A to F.
II. No letter may be repeated.
- A Statement I alone is sufficient, but Statement II alone is not sufficient
- B Statement II alone is sufficient, but Statement I alone is not sufficient
- C Each statement alone is sufficient
- D Both statements together are sufficient, but neither statement alone is sufficient Correct
- E Statements I and II together are not sufficient
Correct Answer: Option D
I alone: repeats allowed or not? Not sufficient.
II alone: alphabet unknown. Not sufficient.
Together: 6P4 = 360. Sufficient.
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