Select the number that can replace the question mark (?) in the following series.
8, 8, 16, 48, ?
8 $$\times$$ 1 = 8
8Â $$\times$$ 2 = 16
16 $$\times$$ 3 = 48
48 $$\times$$ 4 = 192
So, the answer would be option b)192.
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