8,3,15,x,51,53,159,161
Find x

• ans: 17.
  Qustn is wrong.. actualy 5 is missing.. and there is no 8..
  actual qustn is: 3,5,15,x,51,53,159,161.
  So solution: 3+2=5, 5*3=15, 15+2=17, 17*3=51, 51+2=53, 53*3=159, 159+2=161
• 11 years agoHelpfull: Yes(68) No(4)
• xcept the first two terms the diff between two terms is 2.
  so ans=17
• 11 years agoHelpfull: Yes(7) No(3)
• i think x=51/3=17
• 11 years agoHelpfull: Yes(6) No(1)
• 161-159=2, 51-53=2, 15-x=2. so, x=17.
• 11 years agoHelpfull: Yes(3) No(3)
• 10
  difference b/w 159 and 161/ 51 and 53 is 2. with dat logic
  difference b/w 8 and 3/ 15 and x should be of 5. so, x=10
• 11 years agoHelpfull: Yes(2) No(9)
• 20
  difference b/w 159 and 161/ 51 and 53 is 2. with dat logic
  difference b/w 8 and 3/ 15 and x should be of 5. so, x=20 ..... i am just guessing ;)
• 11 years agoHelpfull: Yes(0) No(11)