Properties:-
1. Units digit of a perfect square can be-0(even number of zeroes),1,4,5,6,9.
Ex-100,81,144,225,676,289.
2. Digital sum of any perfect square can be-1,4,9,7.
Ex-289 digital sum=2+8+9=19,digital sum=10,digital sum=1.(until one digit).
Note-perfect square cannot end with an odd number of zeroes and the digits2,3,7,8.
1. Units digit of a perfect square can be-0(even number of zeroes),1,4,5,6,9.
Ex-100,81,144,225,676,289.
2. Digital sum of any perfect square can be-1,4,9,7.
Ex-289 digital sum=2+8+9=19,digital sum=10,digital sum=1.(until one digit).
Note-perfect square cannot end with an odd number of zeroes and the digits2,3,7,8.
No comments:
Post a Comment