What will come in place of the question mark (?) in the given number series?
508, 256, 130, 67, 35.5, ?
Each term is divided by 2 and then 2 is added.
508 $$\div 2 + 2$$ = 256
256 $$\div 2 + 2$$ = 130
130 $$\div 2 + 2$$ = 67
67 $$\div 2 + 2$$ = 35.5
35.5 $$\div 2 + 2$$ = 19.75
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