Find the next pair in the sequence - AB CA FB JA

1) OB 2) OC 3) NA 4) NB

• 1)OB is the next pair
  
  
• 12 years agoHelpfull: Yes(5) No(0)
• ans OB
  CONSIDER A , C ,F , J SO A + 1 = C + 2 = F + 3 = J + 4 = O
  AND NEXT B , A , B ,A ,B
  SO ANS IS OB
• 11 years agoHelpfull: Yes(0) No(0)
• the second letter in the pair would be ofcourse B as it is of the order B , A , B , A
  
  the first letter of the pair wold be O as it is the 15th alphabet
  
  and 15 comes because of the order below
  
  A = 1
  C = 1+2
  F = 1+2+3
  J = 1+2+3+4
  O = 1+2+3+4+5
• 5 years agoHelpfull: Yes(0) No(0)