Find the odd man out
3, 7, 15, 27, 63, 127, 255
A. 7 B. 15
C. 27 D. 63

• ANS C. 27
  
  Explanation:
  1*2+1 = 3
  3*2+1 = 7
  7*2+1 = 15
  15*2+1 = 31
  31*2+1 = 63
  63*2+1 = 127
  127*2+1= 255
• 12 years agoHelpfull: Yes(6) No(0)
• 3+4=7
  7+8=15
  15+16=31 butt here 27 it's not
  31+32=63
  63+64=127,
  127+128=255
  add the given number and given number next number.
  For ex: 3(given number)+4(given number next number)=7.
  
• 12 years agoHelpfull: Yes(1) No(1)
• 7
  since 7 is not divisible by 3
• 6 years agoHelpfull: Yes(0) No(0)