There are 4 friends A, B, C, and D standing in a straight line, though not necessarily in the same order. A and B are ahead of at least 1 person. B st...
Question
There are 4 friends A, B, C, and D standing in a straight line, though not necessarily in the same order. A and B are ahead of at least 1 person. B stands between C and D. D does not stand last. Who stands first?