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What will come in place of the question mark (?) in the following number series ?
Successive even numbers are multiplied.
8 $$\times 2$$ = 16
16 $$\times 4$$ = 64
64 $$\times 6$$ = 384
384 $$\times 8$$ = 3072
3072 $$\times 10$$ = 30720
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