1) 2,5,10,17,_
2) 3,5,9,17,_
3) 2,6,10,18,_
4) 101,106,115, --,145 ,166,191
5) 11,12,23,35,58,-

• 1) 2,5,10,17, x
  1^2 + 1 = 2
  2^2 + 1 = 5
  3^2 + 1 = 10
  4^2 + 1 = 17
  5^2 + 1 = 26 => x=26
  Ans : 26
  
  2) 3,5,9,17, x
  3 + 2^1 = 5
  5 + 2^2 = 9
  9 + 2^3 = 17
  17 + 2^4 = 33
  Ans : 33
  
  3) 2,6,10,18, x
  2 + 2^2 = 6
  2 + 2^3 = 10
  2 + 2^4 = 18
  2 + 2^5 = 34
  Ans : 34
  
  4) 101,106,115, x ,145 ,166,191
  106 - 101 = 5
  115 - 106 = 9 [difference = prev diff + 4]
  x - 115 = 13
  145 - x = 17
  166 - 145 = 21
  191 - 166 = 25
  Hence x = 128
  Ans : 128
  
  5) 11,12,23,35,58, x
  11 + 12 = 23
  12 + 23 = 35
  23 + 35 = 58
  35 + 58 = 93
  Ans : 93
• 10 years agoHelpfull: Yes(52) No(0)
• 1) 2,5,10,17, x
  
  2+3=5
  5+5=10 [here the +5=3+2]
  10+7=17 [here the +7=5+2]
  17+9=26 [here the +9=7+2]
  ans:26
• 10 years agoHelpfull: Yes(0) No(0)
• 1)26
  2)33
  3)26
  4)
  5)84
• 10 years agoHelpfull: Yes(0) No(1)
• 3)2,6,10,18,x
  2^2+2,3^2+1,4^2+2,5^2+1=26
  
• 10 years agoHelpfull: Yes(0) No(1)
• 5-2=3
  10-5=5
  17-10=7
  it is in the form of odd number so just add +9 to the previous number (17+9=26)
• 10 years agoHelpfull: Yes(0) No(0)