Solution
Given : 8*9 = 36, 12*4 = 24 and 14*6 = 42
If we replace '*' with 'x', and divide the product by 2, we get the desired result.
Eg :- $$\frac{8\times9}{2}=36$$
and $$\frac{12\times4}{2}=24$$ and $$\frac{14\times6}{2}=42$$
Similarly, $$\frac{18\times6}{2}=54$$
=> Ans - (B)
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