-12 , 6 , -15 , 28 , -14 , 9 , 3 , -18

• -12 , 6 , -15 / 28 , -14 , 9 /, 3 , -18,?/
  every category of last no is i.e(-15,9,?) multiple of three with difference six i.e(15-9=6 & 9-?=6 so ?=3)
• 6 years agoHelpfull: Yes(6) No(20)
• the answer is -43
  6-21=-15
  -14+23=9
  -18-25=-43
• 6 years agoHelpfull: Yes(4) No(7)
• 6*2= -12
  skip= -15
  -14*(-2)= 28
  ---------
  3 ans
• 6 years agoHelpfull: Yes(0) No(28)
• Original Question should be : -12,6,-15,-5,28,-14,9,3,-18
  -12 / 6 = 2
  -15 / -5 = 3
  28 / -14 = 2
  9 /3 = 3
  -18 / x = - 2 => x = 9
• 4 years agoHelpfull: Yes(0) No(1)