3, 15, x, 51, 53,159,161. Find X

• the pattern is: previous number*3,previous number+2
  
  the solution of x=17
  i.e.3,15,17,51,53,159,169
  
• 13 years agoHelpfull: Yes(5) No(0)
• 17
  beacuse the series is like x,x*5,(x*5)+2..
  so 3,(3*5)15,(15+2)17,(17*3)51,(51+2)53,159(53*3),161(159+2)
• 13 years agoHelpfull: Yes(1) No(0)
• The difference between the two consecutive numbers is 2 ;exclude 3 here
  consider 17 here then
  17-15=2 and next number will be 17*3=51
  same process continued.
  53-51=2 and next number is 53*3=159
  Threrefore the answer is 17.
• 13 years agoHelpfull: Yes(0) No(0)