Six children — $A, B, C, D, E,$ and $F$ — are going to sit in six chairs in a row. Child $E$ must be somewhere to - The Beat The GMAT Forum

Six children — $A, B, C, D, E,$ and $F$ — are going to sit in six chairs in a row. Child $E$ must be somewhere to the left of child $F.$ How many possible configurations are there for the children?

A. 60
B. 180
C. 240
D. 360
E. 720

Answer: D

Source: Magoosh

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