Find the odd man out
445, 221, 109, 46, 25, 11, 4
A. 221 B. 109
C. 46 D. 25

• Ans: C. 46
  
  4*2+3 = 11
  11*2+3 = 25
  25*2+3 = 53
  53*2+3 = 109
  109*2+3 = 221
  221*2+3 = 445
• 12 years agoHelpfull: Yes(10) No(0)
• the diff b/w (445-221)=224
  the diff b/w (221-109)=112{which is diff of prev/2 ie 224/2}
  the diff b/w (109-46)=63 {which is not the diff of previous/2}
  the diff b/w (46-25)=21
  the diff b/w(25-11)=14
  the diff b/w (11-7)=7 {which is the diff of previous/2}
  from this we know that 46 is wrong number because 112/2 gives 56 .
  but in question 109-46 gives 63 so it clear that 46 is wrong
  in order to find the correct num 109-x=56
  then x=53
  53 is correct in place of 46
• 11 years agoHelpfull: Yes(0) No(0)
• Every number multiply with 2 and add 3 we will get answer but 25*2+3=53 .so 46 is incorrect.
• 5 years agoHelpfull: Yes(0) No(0)