alleryStart learning →A queue has 4 boys and 3 girls with every girl standing in one unbroken block. Count the queues.
A5040
B144
C240
D720
Answer & Solution
Correct answer: D. 720
The girls' block plus 4 boys is 5 units (5! = 120) and the girls can order 3! = 6 ways, so 720.
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