Which is the biggest perfect square amongst the following :
15129, 12348, 23716, 20736

• lets go from the options...
  the perfect squares may not have unit digits other than 00,1,4,9,6,5
  hence eliminate 12348
  the sum of digits(129->1+2+9=12->1+2=3) should not be other than 0,1,4,7
  hence eliminate 15129 and 20736
  and thus the answer is 23716.
• 7 years agoHelpfull: Yes(10) No(0)
• 23716 is a biggest perfect square numbers.
  
  23716 is square of 154
  
• 12 years agoHelpfull: Yes(7) No(2)