4, 12, 6, 18, 9, 27, .......
next number of the sequence will be

• 4, 12, 6, 18, 9, 27, ......
  
  4*3=12
  12/2=6
  6*3=18
  18/2=9
  9*3=27
  next number is 27/2 =13.5
  
  Nos at Even positions are obtained by multiplying previous no by 3
  and
  Nos at odd positions are obtained by dividing previous no by 2.
• 12 years agoHelpfull: Yes(2) No(2)
• 4*3=12
  6*3=18
  9*3=27
  IN B/W 4 AND 6 1 DIGIT IS DER IN B/W 6 AND 9 2 DIGITS ARE DER SO IN B/W 9 AND 13 3 DIGITS S0 13*3=39
  ANS IS 13,39
• 12 years agoHelpfull: Yes(2) No(1)
• 4 *3=12, 12/2=6, 6*3=18, 18/2=9, 9*3=27, 27/2=13.5
  
  so ans= 13.5
• 12 years agoHelpfull: Yes(1) No(0)
• 4,12,6,18,9,27,13,39.
  4+2=6,6+3=9,9+4=13
  and digits at 2nd,4th positions are 3 times multiple of 1st ,3rd numbers.
• 12 years agoHelpfull: Yes(1) No(0)
• ANS: 13
  Here there are two sequences
  4,6,9,......... and 12,18,27,.......
  in the first sequence, add 2 for 4, 3 for 6, and 4 for 9 then we will get 13
• 12 years agoHelpfull: Yes(0) No(0)