In how many ways can seven children posing for a photograph line up in a row?
A)5,040
B)5,140
C)5,090
D)6,040
E)5,540

Name: In how many ways can seven children posing for a photograph line up in a row? A)5,040 B)5,140 C)5,090 D)6,040 E)5,540
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Question

In how many ways can seven children posing for a photograph line up in a row? ​
A)5,040
B)5,140
C)5,090
D)6,040
E)5,540

Quizplus · Accepted Answer

The number of ways to arrange n distinct objects in a row is given by n!, which means the number of ways to arrange seven distinct children is 7!. 
7! = 7 x 6 x 5 x 4 x 3 x 2 x 1 = 5,040. 
Therefore, the answer is A) 5,040.

In How Many Ways Can Seven Children Posing for a Photograph