a two digit no is 18 less than sum of square of square of its digit.how many such no are there

• ans: 2
  63=(8+1)^2-18=81-18
  82=(8+2)^2-18=100-18
• 11 years agoHelpfull: Yes(4) No(1)
• ans:1
  63 is such number
  (6^2+3^2)=45
  63-45=18(differ by 18)
• 11 years agoHelpfull: Yes(1) No(0)