A farmer has 16 cows.

A farmer has 16 cows.
They are numbered also 1 to 16.
Each number also represents No of litres that cow gives.
For eg 10 no cow gives 10 litres.
The Farmer has four sons.
He wants to distribute equal no of cows and equal no of litres to each son.
Make four sets for each son.
Challenge 👍👍

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34 Ltrs to each son
1st son : 1,2,15,16
2nd son : 3,4,13,14
3rd son : 5,6,11,12
4th son : 7,8,9,10