Find out the wrong term.
3, 7, 15, 39, 63, 127, 255, 511

A. 15 B. 39
C. 63 D. 127

• Option B 39
  3*2+1=7
  7*2+1=15
  15*2+1=31
  31*2+1=63
• 12 years agoHelpfull: Yes(1) No(0)
• option b 39
  512-1=511
  256-1=255
  128-1=127
  64-1=63
  32-1=31
  16-1=15
  8-1=7
  4-1=3
• 11 years agoHelpfull: Yes(0) No(0)