Question

4 7 5 9 =5 ,75 14 35 20=12 , 65 9 45 50 =??

Answer 1

$4 + 7 + 5 + 9 \\ 25 \sqrt{5}$65 + 9 + 45 + 50 is equal to 169 169 is square of 13 answer is 13