1,2,3,2,4,6,4,8,_____

• Divide the series:
  1,2,3
  2,4,6
  4,8,?
  so it is 12
• 8 years agoHelpfull: Yes(10) No(3)
• break the series into three portion such that:
  (1,2,3),(2,4,6),(4,8,?)
  now simply multiply the first set of each number with 2 to get the second set of number
  (1*2,2*2,3*2) =(2,4,6)
  similarly multiply the second set of each number with 2 to get the third set of number
  (2*2,3*2,6*2)=(4,8,12)
  so the final answer would be 12.
  
• 8 years agoHelpfull: Yes(4) No(0)
• 1*1=1, 2*1=2, 3*1=3
  1*2=2, 2*2=4, 3*2=6
  2*2=4, 4*2=8 6*2=12
  ANS:12
• 8 years agoHelpfull: Yes(2) No(0)
• 12
  1,2,3--> gap =1
  2,4,6--> gap= 1*2=2
  4,8,12--> gap=2*2=4
• 8 years agoHelpfull: Yes(2) No(0)
• 1+1=2
  2+1=3
  3-1=2
  2+2=4
  4+2=6
  4+4=8
  8+4=12
  
• 8 years agoHelpfull: Yes(1) No(1)
• 1+2=3
  2+4=6
  4+8=12
• 8 years agoHelpfull: Yes(1) No(0)
• answer is 12
  the series like this
  1,2,3
  2,4,6
  4,8,12
• 8 years agoHelpfull: Yes(1) No(0)
• 12
  there is 3 different series as 1,2,3........2,4,6.....4,8,12...
• 8 years agoHelpfull: Yes(1) No(0)
• 12
  1+2=3;
  2+4=6;
  4+8=12;
• 8 years agoHelpfull: Yes(1) No(0)
• ANS): 12
• 7 years agoHelpfull: Yes(1) No(0)
• 12
  first three series of multiplication of 1,2,4
  
• 8 years agoHelpfull: Yes(0) No(2)
• The answer is 12.
  first 1,it doudles at 3rd position next to 1..
  likewise 6 doubles to give 12
• 8 years agoHelpfull: Yes(0) No(0)
• ans:12
  1*1=1
  1*2=2
  1*3=3 i.e 1,2,3 are multiples of 1
  2*1=2
  2*2=4
  2*3=6 i.e 2,4,6 are multiples of 2
  4*1=4
  4*2=8
  4*3=12 i.e 4,8,12 are multiples of 4
• 8 years agoHelpfull: Yes(0) No(0)
• 1+1=2
  2+1=3
  3-1=2
  2+2=4
  4+2=6
  6-2=4
  4+4=8
  8+4=12
• 8 years agoHelpfull: Yes(0) No(0)
• 12. 1,2,3 - 1 table. 2,4,6-2 table, similarly 4,8,12.
• 8 years agoHelpfull: Yes(0) No(0)
• (1,2,3),(2,4,6),(4,8,_)
  Answer is 16
• 8 years agoHelpfull: Yes(0) No(0)
• Add 1to the next two series and subtract 1 and repeat for 2 and subtract 2 then adding 4to 4then 8 to 4=12
  1+1=2,2+1=3,3-1=2,2+2=4,4+2=6,6-2=4,4+4=8,8+4=12 is answer
• 8 years agoHelpfull: Yes(0) No(0)
• 12 b'coz 1+2=3,2+4=6,nd 4+8=12
• 8 years agoHelpfull: Yes(0) No(0)
• Group first 3 terms ( 1 2 3 ) 1+2=3 then next 3 terms(2 4 6) 2+4=6 then next 3 terms (4 8 ?) 4+8=12 so,ans=12
• 8 years agoHelpfull: Yes(0) No(0)
• 1+2=3
  2+4=6
  4+8=12
• 8 years agoHelpfull: Yes(0) No(0)
• 1+2=3
  2+4=6
  4+8=12
  
• 8 years agoHelpfull: Yes(0) No(0)
• first 3 numbers are series
  second 3 are multiply 2 with 1st series
  1*2=2 2*2=4 3*2=6
  6*2=12
  
• 8 years agoHelpfull: Yes(0) No(0)
• the answer is 12
• 8 years agoHelpfull: Yes(0) No(0)
• 12
  1*1=1;1*2=2;1*3=3
  2*1=2;2*2=4;2*3=6
  4*1=4;4*2=8;4*3=12
• 8 years agoHelpfull: Yes(0) No(0)
• 1st 3 diff is 1
  2nd 3 no. diff 2
  3rd 3 no diff is 2
  ans:12
• 8 years agoHelpfull: Yes(0) No(0)
• the series is in the form +1,+1,-1,+2,+2,-2,+4,+4,-4
• 8 years agoHelpfull: Yes(0) No(0)
• 12(4+8=12)
• 8 years agoHelpfull: Yes(0) No(0)
• 1*2,1*2,1*3,2*1,2*2,2*3,4*1,4*2,4*3 thats why ans is 12
• 8 years agoHelpfull: Yes(0) No(0)
• 1*1,2*1,3*1=1,2,3
  1*2,2*2,3*2=2,4,6
  1*4,2*4,3*4=4,8,12
  
• 8 years agoHelpfull: Yes(0) No(0)
• 12
  make group of 3
  1 2 3
  2 4 6
  4 8 12
• 8 years agoHelpfull: Yes(0) No(0)
• 1*2=2
  2*2=4
  3*2=6
  2*2=4
  4*2=8
  6*2=12
  
• 8 years agoHelpfull: Yes(0) No(0)
• 12
  1 2 3
  1*2 =2 2*2=4 3*2=6
  2*2 4*2 6*2=12
  
• 8 years agoHelpfull: Yes(0) No(0)
• ans is 12
  
  1 2 3
  2 4 6
  4 8 12
  like that 3 different series
  
• 8 years agoHelpfull: Yes(0) No(0)
• Divide the series in grps of 3:
  1,2,3: 2,4,6; 4,8,12;
• 8 years agoHelpfull: Yes(0) No(0)
• 1,2,3->1*2,2*2,3*2=2,4,6
  similarly ans is 12
• 8 years agoHelpfull: Yes(0) No(0)
• 1+2=3 ,third number
  2+4=6 ,sixth number
  4+8=12. answer
• 8 years agoHelpfull: Yes(0) No(0)
• 1,2,3
  2,4,6
  4,8,12
• 8 years agoHelpfull: Yes(0) No(0)
• 12
  1x1=1
  1x2=2
  1x3=3
  2x1=2
  2x2=2.....so on
  so 4x3=12
  
  
• 8 years agoHelpfull: Yes(0) No(1)
• ans is 12
  1+2=3
  2+4-=6
  4+8=12
  adding 1st 2 nos gives 3rd no....adding 4th and 5th gives 6th no.....
• 8 years agoHelpfull: Yes(0) No(1)
• 12
  1,2,3,1*2,2*2,3*2,2*2,4*2,6*2
• 8 years agoHelpfull: Yes(0) No(1)
• 1,2,3
  2,4,6
  4,8,12
• 8 years agoHelpfull: Yes(0) No(1)
• 3*2=6,6*2=12
• 8 years agoHelpfull: Yes(0) No(1)
• ans 12
  1 2 3 2*1,2*2,2*3,4*1,4*2,4*3
• 8 years agoHelpfull: Yes(0) No(1)
• 1+2=3,2+4=6,4+8=12
• 8 years agoHelpfull: Yes(0) No(1)
• (1,2,3) dif=1
  (2,4,6) dif=2
  (4,8,__) dif=4 therefore ans=12
• 8 years agoHelpfull: Yes(0) No(1)
• 12
  2*1=2
  2*2=4
  2*3=6
  similarly
  4*1=4
  4*2=8
  4*3=12 will be the answer
• 8 years agoHelpfull: Yes(0) No(1)
• 1*2=2,2*2=4,3*2=6,2*2=4,4*2=8,6*2=12 so ans =12
• 8 years agoHelpfull: Yes(0) No(0)
• create group of 3 i.e. (1,2,3),(2,4,6),(4,8,?) so in each group 2nd and 3rd is multiple of first term
  so 1*2 = 2
  1*3 = 3
  and
  2*2 = 4
  2*3 = 6
  so
  4*2 = 8
  4*3 = 12
  so ans is 12;
  
• 8 years agoHelpfull: Yes(0) No(0)
• take first three numbers
  1+2=3
  2+4=6
  4+8=12
  ans is 12
• 8 years agoHelpfull: Yes(0) No(0)
• 1,2,3 difference is 1 1 -1
  2 4 6 diff is 2 2 -2
  8 12 8 diff should be 4 4 -4
• 8 years agoHelpfull: Yes(0) No(1)
• 12
  consider 3 number as group
  
• 8 years agoHelpfull: Yes(0) No(0)
• The given sequence of numbers is actually made by joining 3 series like shown below.
  First Series is formed by = 1st number, 4th number, 7th number
  Second Series is formed by = 2nd number, 5th number , 8th number
  Third Series is formed by = 3rd number, 6th number, 9th number
  So the three series would look like:
  1, 2, 4
  2, 4, 8
  3, 6, ?
  
  Next number for each series is = 2 * previous number.
  Hence for 3rd series 6*2 = 12
• 7 years agoHelpfull: Yes(0) No(0)
• 12, the series is 1,2,3,2,4,6,4,8,---,left 1 consider second and third terms 2,3 again fourth term is same as second ,fifth term is twice the second , sixth term is twice the third ,seventh term repeated as same as fifth term like that
• 7 years agoHelpfull: Yes(0) No(0)
• 1,1+1,2+1,3-1,2+2,4+2,6-2,4+4,8+4=12
  Ans:12
• 7 years agoHelpfull: Yes(0) No(0)
• series in form of 1,2,3 then 1*2=2, 2*2=4, 3*2=6 then 2*2=4, 4*2=8, and next will be 6*2=12
• 7 years agoHelpfull: Yes(0) No(0)
• 1+1=2
  2+1=3
  3-1=2
  2+2=4
  4+2=6
  6+2=8
  8-2=6
• 7 years agoHelpfull: Yes(0) No(0)