It should be 9. I hope this helps. If it's not 9 then can u please give me a list of your answers to choose from.
Let the number = x
It would be: 9x + 6 = 456
9x = 456 - 6
9x = 450
x = 450 / 9
x = 50
In short, Your Answer would be 50
Hope this helps!
3. {6,9,15)
for these u have use Pythagoras theorem
