Question

From the original position given in the diagram, A and B move one side length clockwise and then crossover to the corner diagonally opposite. C and D move one arm length anticlockwise and crossover to the comer diagonally opposite. The original configuration ADBC has now been changed to:

• A. CBDA
• B. BDAC
• C. DACB
• D. ACBD
• E. BCAD

Answer 1

The correct option is A CBDA

The original and final positions of A, B, C and D are indicated in diagrams (i) and (ii), respectively.
The final positions of A, B, C and D are marked as $A^{\ast }{B}^{\ast }{C}^{\ast }{D}^{\ast }$. From diagram (ii), we observe that the original configuration ADBC has been changed to CBDA.