6,8,10,8,,15,17,12,16,?

• two series. series 1: 6,8,12
  series 2: (8,10) (15,17) (16,?)
  2 2 2
  ans 16+2=18
• 11 years agoHelpfull: Yes(52) No(12)
• divide into 3 trms
  6,8,10
  8,15,17
  12,16,x
  
  6+8=14, 14-4=10
  15+8=23, 23-6=17
  12+16=28, 28- (sub wid 4,6 so d nxt would b 8)
  so 28-8=20
  
  ans is 20
• 11 years agoHelpfull: Yes(27) No(5)
• Above both solution can be true but not obvious .other soulution can be possile
• 6 years agoHelpfull: Yes(0) No(0)