COMPUTER SCIENCE AND ENGINEERING
ALGORITHMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If 7 people wait in line for the drinking fountain there would be ____ different orders.
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7
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49
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14
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5040
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5 million
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Explanation:
Detailed explanation-1: -Answer. or 5, 040 ways. Alternatively, we can use the simple rule for counting permutations. That is, the number of ways to arrange 7 distinct objects is simply.
Detailed explanation-2: -7! =7⋅6⋅5⋅4⋅3⋅2⋅1=5040. This particular problem is a permutation.
Detailed explanation-3: -So there are 5040 ways of arranging seven people in a row of seven chairs.
Detailed explanation-4: -Hence the correct answer is 480.
There is 1 question to complete.