3, 15, x, 51, 53,159,161 value of x ?
a)17 b)34 c)54 d)112

• ans: 17 qustn s wrong.. actualy 5 is missin.. actual qustn s 3,5,15,x,51,53,159,161. solution: 3+2=5, 5*3=15, 15+2=17, 17*3=51, 51+2=53, 53*3=159, 159+2=161
• 13 years agoHelpfull: Yes(48) No(6)
• ans:a
  3*5=15
  15+2=17
  17*3=51
  51+2=53.......
• 13 years agoHelpfull: Yes(12) No(3)
• answer is a)17...161-159,53-51,17-15 all is 2
• 13 years agoHelpfull: Yes(6) No(2)
• 3 , 15, 17 , 51, 53, 159, 161, 483, 485,
  logic
  3 (3x5) , (15+2), ( 3x17), ( 51+2), ( 3x53), ( 159+2), (3x161) , ( 483+2)
• 13 years agoHelpfull: Yes(6) No(2)
• 17
  3+2=5*3=15
  15+2=17
  17*3=51
  51+2=53
• 13 years agoHelpfull: Yes(4) No(0)
• 15, x, 51, 53,159,161 value of x ?
  15+2 it =17,17*3=51 first we need to add given number with two, and multiply
  it with 3
• 13 years agoHelpfull: Yes(4) No(0)
• ans=17
  161-159=2
  53-51=2
  17-15=2
  
• 8 years agoHelpfull: Yes(1) No(0)
• 15+2=17*3=51
  51+2=53*3=159
  159+2=161
• 8 years agoHelpfull: Yes(0) No(0)