A three digit number xyz is squared,which of the following could be the last digit of the square so obtained?
a)8 b)3 c)2 d)1

• ans-d)1
  
  square table from 1 to 10
  1^2=1
  2^2=4
  3^2=9
  4^2=16 ie last digit 6
  5^2=25 ie 5
  6^2=36 ie 6
  7^2=49 ie 9
  8^2=64 ie 4
  9^2=81 ie 1
  10^2=100 ie 0
  so last last digit could be 0,1,4,5,6,9
• 12 years agoHelpfull: Yes(38) No(3)
• ANS : 1 because any no. when squared , the last digit can't be 2,3,7, so ans should be 1
• 12 years agoHelpfull: Yes(13) No(1)
• Irrespective of the digits the square of any number cant end in either 8/3/2 answer is 1(can be the last digit of a number ending in 1 and 9)..
  
• 12 years agoHelpfull: Yes(7) No(0)
• answer should be option - D ) 1..........abhishek arah
• 9 years agoHelpfull: Yes(1) No(0)
• for any square value we get only 0,1,4,9,6,5.so the ans is 1
• 10 years agoHelpfull: Yes(0) No(0)
• 1^1=1 9^9=81
  2^2=4 8^8=64
  3^3=9 7^7=49
  4^4=16 6^6=36
  5^5=25 0^0=0
  when 'z' in considered as any number from 0-9 then it's square must be from the set { 0,1,4,9,6,5}
  So, by options, we can convey that 1 is the answer.
• 8 years agoHelpfull: Yes(0) No(0)