If in a lake the no. of lotuses double than what they were on the previous day. And on the first day there is only 1 lotus.If it takes 20 days for the lake to be fully filled up,then on which day is the lake half filled?
If in a lake the no. of lotuses double than what they were on the previous day. And on the first day there is only 1 lotus.If it takes 20 days for the lake to be fully filled up,then on which day is the lake half filled?
19 days
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