Find the missing number:
3 6 18 ? 7 8

• 3*2=6
  6*2+6=18
  18*2=36
  36*2+6=78
  we add 6 to product alternately. so blank is replaced by 36
• 13 years agoHelpfull: Yes(23) No(5)
• 3 6 18 ? 7 8
  3*6=18 ------>>
  56=7*8
• 12 years agoHelpfull: Yes(8) No(3)
• is the question in 78 or 7 8 ???????
• 12 years agoHelpfull: Yes(6) No(4)
• 3*2=6
  6*2+6=18
  18*2=36
  36*2+6=78
• 12 years agoHelpfull: Yes(3) No(1)
• if quen is 78 then ans is 36
  else it is 7 8 then ans is 56
• 12 years agoHelpfull: Yes(2) No(1)
• 26
  
  3 6 18 ? 7 8
  
  3 6 18 26 7 8
• 13 years agoHelpfull: Yes(1) No(12)
• 3*1=3
  3*2=6
  (6*2)+6=18
  (18*2)=36
  36*2+6=78
• 12 years agoHelpfull: Yes(0) No(1)
• 3*2 = 6
  6*2 + 6 = 18
  18*2 = 36
  36*2 + 6 = 78
  
  so its 36
• 12 years agoHelpfull: Yes(0) No(1)
• 3*6=18
  8*7=56..
  hence the number is 56
• 12 years agoHelpfull: Yes(0) No(2)