A vertex of one square is pegged to the centre of an identical square, and the overlapping area is blue. One of the square is the rotated about the vertex and the resulting overlap is red.
The answer is A : 256 or 2 to the 8th power different combinations. In EBCDIC (Extended Binary Coded Decimal Interchange Code). It is an 8-bit code allowing 256 possible combinations of textual symbols. (2 to the 8th power = 256)
