9,12,4,8,12,15,5,9,3,6,2,6,6,9,?

• Make pairs as follows:
  (9,12,4,8),(12,15,5,9),(3,6,2,6),(6,9,_,_)
  9+3=12, 12/3=4, 4+4=8
  12+3=15, 15/3=5, 5+4=9
  3+3=6, 6/3=2, 2+4=6
  similarly,
  6+3=9, 9/3=3, 3+4=7
  the next pair is 6,9,3,7
  Answer. 3
• 11 years agoHelpfull: Yes(47) No(0)
• Take consecutive two number as a pair and find the difference.......
  12-9=3(1st pair)
  8-4=4(2nd pair)
  15-12=3(3rd pair)
  9-5=4(4th pair)
  6-3=3(5th pair)
  6-2=4(6th pair)
  9-6=3(7th pair)
  suppose last number is y,x
  then
  x-y=4(8th pair)
  and y*3=9
  => y=3
  so
  x-3=4
  and x=7
  so last two number is
  3,7
  
  
• 11 years agoHelpfull: Yes(20) No(1)
• take 9,12,4,8 as a pair
  then 9+3=12 ,4*3=12 ,4+4=8
  take 12,15,5,9 as a pair
  similarly 3,6,2,6,
  then 6,9,3,7
  
  so answer is 3(ans)
• 11 years agoHelpfull: Yes(9) No(1)
• 
  12-9=3
  8-4=4
  15-12=3
  9-5=4.....ans will be 13
• 11 years agoHelpfull: Yes(1) No(1)
• consider (12,4) then leave two and consider (15,5) and leave two and consider( 6,2) and leave two (9,?) =3
• 11 years agoHelpfull: Yes(1) No(0)
• 3 is the ans
• 11 years agoHelpfull: Yes(1) No(0)
• first term+ last term = 9+9=18
  12+6=018
  4+6=10
  8+2=10
  12+6=18
  15+3=18
  so... in the next series it should be a sum of 10
  5+x=10 s0 x=5
  9+y=10 so y=1
  
• 11 years agoHelpfull: Yes(0) No(2)
• 12-9=3
  8-4=4
  15-12==3
  9-5=4
  6-3==3
  6-2=4
  9-6=3
  so ans. is 12 12-8=4
  
• 11 years agoHelpfull: Yes(0) No(2)