Question

1+2=5,2+ 3=13,3+4=25,then1+4=

Answer 1

1+2=5 (square of 1+ square of 2=5)
2+3=13 (square of 2+ square of 3 =13)
3+4=25 ( square of 3+ square of 4 =25)
1+4=17 ( square of 1+ square of 4 = 17)

hope this helps........

Answer 2

$<h2><marquee behavior="alternate"><font color="Blue"><u>Hello</font> <font color="lime"><u>Friend</marquee></font></u></h2>$

In this problem,
According to me the answer should be 17.

Let's see how☺☺

Here,

1^2 + 2^2 = 5

2^2 + 3^2 = 13

3^2 + 4^2 = 25

similarly,
1^2 + 4^2 = 17

so, the answer is 17
$<h2><marquee behavior="alternate"><font color="Blue"><u>#Optimus</font> <font color="lime"><u>Prime</marquee></font></u></h2>$