Question

There is one lily in the pond on 1st june . There are two in the pond on 2nd june . There are four on 3rd june and so on. The pond is full with lilies by the end of the june . (i) on which date the pond is half full?

Answer 1

$\boxed{\textbold{ {29}^{th} \: June}}$
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Lilies get double each day...

The pond is full by lilies on ${30}^{th} \: June.$

This means that it was half a day before......

Hence, it was filled half by lilies on ${29}^{th}\: June.$