Question:
There are six drinking glasses standing in a row, with first three full of juice and the next three empty? How can you arrange those glasses so empty and full glasses alternate by moving only one glass?
.
.
C
A
P
T
A
I
N
I
N
T
E
R
V
I
E
W
.
.
Answer:
Pour the second glass in the fifth glass, and you can arrange them in alternate order.