Mr. Rawat wishes to cross a the Sahara desert.
It requires 6 days to cross.
One man can only carry enough food and water for 4 days.
What is the fewest number of other men required to help carry enough food for Mr. Rawat to cross ?
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2men
Say 2 helpers are A & B
A food B food Rawat's Food
End of Day 1 : 1 4 4
Now 'A' will head back
End of Day 2 : N/A 2 4
Now 'B' will head back
Now Mr. Rawat have 4 day food :-)