5.
17,25,37,50,65,82,101
1.25
2.17
3.101
4.65
5.None

• 4^2+1=17
  5^2+1=26
  6^2+1=37............................
  so, the answer is 25
• 7 years agoHelpfull: Yes(11) No(0)
• 17+9=26(25)
  26+11=37
  37+13=50
  50+15=65
  65+17=82
  82+19=101.............................
  so, Ans is 25
• 7 years agoHelpfull: Yes(3) No(0)
• 65 because it has no sequence
• 7 years agoHelpfull: Yes(0) No(5)
• only 1 25 here series is incresing with odd figures
• 7 years agoHelpfull: Yes(0) No(0)
• 25
  since it is just square of 5, all other are the numbers got after adding 1 to its square
• 7 years agoHelpfull: Yes(0) No(0)
• 25
  all others r their sqaues plus one
• 7 years agoHelpfull: Yes(0) No(0)
• 25
  all others r their sqaues plus one
• 7 years agoHelpfull: Yes(0) No(0)
• 4^2+1=17
  5^2+1=26
  6^2+1=37
  7^2+1=50
  8^2+1=65
  my ans is 25
• 6 years agoHelpfull: Yes(0) No(0)
• 25 obvious
• 6 years agoHelpfull: Yes(0) No(0)
• 25 is the odd one because all the remaining numbers follow ->(x) ^2+1
  i.e., starts with 4^2+1=17
  5^2+1=26(but given 25)
  6^2+1=37
  so on....
• 6 years agoHelpfull: Yes(0) No(0)
• 4^2+1=17
  5^2+1=26
  6^2+1=37
  7^2+1=50..................
  ans is 25
• 6 years agoHelpfull: Yes(0) No(0)
• 17 = 4^2 + 1;
  25 = 5^2 + 0;
  37 = 6^2 + 1;
  50 = 7^2 + 1;
  65 = 8^2 + 1;
  82 = 9^2 + 1;
  101 = 10^2 + 1;
  
  25 does not follow the pattern other numbers do. So, 25 is odd.
• 6 years agoHelpfull: Yes(0) No(0)