What will come in place of the question mark (?) in the given number series?
721, 361, 181, 91, 46, ?
The pattern is :
721 $$- 360$$ = 361
361 $$ - \frac{360}{2} = 361 - 180$$ = 181
181 $$ - \frac{180}{2} = 181 - 90$$ = 91
91 $$ - \frac{90}{2} = 91 - 45$$ = 46
46 $$ - \frac{45}{2} = 46 - 22.5$$ = 23.5
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