Question

3 4 , 5 12 13 , ? 15 17

Answer 1

5 12 13 (by pythagoras theorem)

a² + b² = c²

so, let take a=5,b=12,c=13

5² + 12² = 13²

25 + 144 =169

like this ? 15 17

let take a=x, b=15,c=17

x² + 15² = 17²

x² = 17²-15²

x² = 289 - 225

x² = 64

x = √64

x = 8

so, 8 is the answer.