$\begin{array}{11} (a)\; 3 \times 8 \times 9 \\ (b)\; 1 + 5 + 5 \times 30 + 30 \times 2 + 1 \\ (c)\; (90 - 55) \times 3 + (60 - 25) \times 3 + (3 \times 5 - 9) \\ (d)\; \text{All the above options are equal}\end{array}$
