COMPUTER SCIENCE AND ENGINEERING
ALGORITHMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When working with 3 letters of the alphabet, they can be rearranged in ____ different orders.
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3
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5
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6
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9
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27
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Explanation:
Detailed explanation-1: -Assuming the 6 letters are unique and that you mean 3-letter combinations (not words) the answer is 120.
Detailed explanation-2: -Factorial Formula Therefore, the number of ways in which the 3 letters can be arranged, taken all a time, is 3! = 3*2*1 = 6 ways.
Detailed explanation-3: -For 6 letter words like SUNDAY, MONDAY, FRIDAY, etc. The number of possible arrangements can be in 6! ways. = 720 ways.
Detailed explanation-4: -So the six letters can be a combination of 6×5×4×3×2×1 letters or 720 arrangements.
There is 1 question to complete.