Question

Find the next number.
7, 15, 31, 63, 127, 255, ?

Answer 1

511

Hope this helps
And if it helped please mark as brainliest

Answer 2

7×2+1 = 15
15×2+1= 31
31×2+1= 63
63×2+1= 127
127×2+1= 255
255×2+1= 511