Question

On a banquet table, 8 different dishes of food will be placed in a row. There...

On a banquet table,

8

different dishes of food will be placed in a row. There are

4

vegetarian dishes and

4

meat dishes. They will be placed alternating between the two types of dishes. A vegetarian dish will be first. How many ways are there to place the dishes on the table?

Math   Statistics-And-Probability   
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Answer #1

We use the concept of permutations here, In permutations the number of ways of arranging r things out of n things in r places  is given by

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