24. Bipin was moving with his brother. When he saw an orchard full of ripe litchis, he asked his brother to buy some. Three guards standing
at the gate told that they could get litchis free of cost but had to give
the guards exactly half the amount they could pick from the trees
and 2 extra. Bipin's brother climbed a tree, picked some litchis and
while back at the gate gave the guards as the rule. Finally He had 4
litchis saved which they divided between him and his brother.
Altogether how many litchis had Bipin's brother picked?

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