2. Which of the following expressions, when it replaces the symbol $\Omega$, makes the equation $\Omega \times \Omega=2 \times 2 \times 2 \times 2 \times 3 \times 3$ correct?
A 2
В 3
C $2 \times 3$
D $2 \times 3 \times 3$
E $2 \times 2 \times 3$
2. E The equation $\Omega \times \Omega=2 \times 2 \times 2 \times 2 \times 3 \times 3$ can be rearranged to give $\Omega \times \Omega=(2 \times 2 \times 3) \times(2 \times 2 \times 3)$. Hence $\Omega=2 \times 2 \times 3$.