Question 93651: The number that results when an integer is multiplied by itself CANNOT end in which of the following digits?
(A) 1
(B) 4
(C) 5
(D) 6
(E) 8 Answer by ptaylor(2198) (Show Source):
You can put this solution on YOUR website! All Integers must end in one of the following digits:
0---when multiplied by itself-----------ends in 0
1---when multiplied by itself-----------ends in 1
2---when multiplied by itself-----------ends in 4
3---when multiplied by itself-----------ends in 9
4---when multiplied by itself-----------ends in 6
5---when multiplied by itself-----------ends in 5
6---when multiplied by itself-----------ends in 6
7---when multiplied by itself-----------ends in 9
8---when multiplied by itself-----------ends in 4
9---when multiplied by itself-----------ends in 1
In the column on the right, I don't see an 8
