7 9 17 47 91 172

• 172
  it is even
  
• 10 years agoHelpfull: Yes(11) No(1)
• all numbers are odd,except
  172 its even
• 10 years agoHelpfull: Yes(4) No(0)
• divide all the terms by 2 ...each of the term gives a remainder of 1 except 172....172 gives a remainder 0.so 172 is the answer.
• 10 years agoHelpfull: Yes(3) No(0)
• 9 is divisible by 3 .remaining not divisible by 3.
• 10 years agoHelpfull: Yes(3) No(0)
• 172 is even.
• 10 years agoHelpfull: Yes(1) No(0)
• 9 is the odd one between all the numbers because its is a perfect square root
• 9 years agoHelpfull: Yes(1) No(0)
• 172 is even
  
  
• 10 years agoHelpfull: Yes(0) No(0)
• 172 its even
• 10 years agoHelpfull: Yes(0) No(0)
• 172 its even
  
• 10 years agoHelpfull: Yes(0) No(0)
• 172 is only the even number
• 10 years agoHelpfull: Yes(0) No(0)
• 172 is the odd man out since its the only even number and rest all are odd.
• 10 years agoHelpfull: Yes(0) No(0)
• all numbers are odd except 172
  so 172 is odd one here
• 9 years agoHelpfull: Yes(0) No(0)
• 172 becoz its even no
• 9 years agoHelpfull: Yes(0) No(0)