Find out the pair of numbers that does not belong to the group for lack of common property.
(A) 11 – 115 (B) 10 – 90
(C) 9 – 72 (D) 8 – 56

• ans: (A) 11 – 115
  
  B,C,D follows (n^2-n)
  10^2-10 =90
  9^2-9 = 72
  8^2-8 = 64
  but 11^2-11=110 which is given 115
• 10 years agoHelpfull: Yes(3) No(0)
• 11-115, all are common with
  X- X(X-1).
• 8 years agoHelpfull: Yes(0) No(0)
• ans - A, as all the other options end as the multiples of the starting number
• 7 years agoHelpfull: Yes(0) No(0)
• A) Except option A all the remaining three options follows the following logic-
  B) 10^2-10
  C) 9^2-9
  D) 8^2-8
• 6 years agoHelpfull: Yes(0) No(0)
• A; 90 is divisible by 10, 72 is divisible by 9, 56 is divisible by 8
• 6 years agoHelpfull: Yes(0) No(0)
• (A)
  8*7=56
  9*8=72
  10*9=90
  11*10=110 but its given 115 so its lack common property.
• 6 years agoHelpfull: Yes(0) No(0)