square of 2 digit number ending with '5'

• To calculate square of two digit number ending with 5, there is one simple formula.
  
  If
  X5 is the number, then last two digits will be 25 and preceding digits are given by x*(X+1)
  
  (X5)^2 = x*(X+1) 25
  e.g
  25^2 will be written as (2*3)_ 25 = 625
  75^2 = (7*8)_25 = 5625
• 12 years agoHelpfull: Yes(3) No(1)
• 15,25,35,45,55,65,75,85,95
  
  Only 2 digit numbers which end with 5 have such possibilities.
• 12 years agoHelpfull: Yes(1) No(1)
• 25^2 = 625
  5^2=25
• 12 years agoHelpfull: Yes(1) No(1)
• 15,25,35,45,55,65,75,85,95
  
  Only 2 digit numbers which end with 5 have such possibilities.
  
  square of 15 = 225
  square of 25 = 625
  square of 35 = 1225
  square of 45 = 2025
  square of 55 = 3025
  square of 65 = 4225
  square of 75 = 5625
  square of 85 = 7225
  square of 95 = 9025
• 12 years agoHelpfull: Yes(1) No(1)
• These are the answers:
  15,25,35,45,55,65,75,85,95
• 12 years agoHelpfull: Yes(0) No(1)
• The answer is 625 which is the square of two digit (25) and ending with 5.
• 12 years agoHelpfull: Yes(0) No(0)