Want this question answered?
-9
The digit in the ones place is 7.
1
9
The unit digit of the square of 81 will be 1.
-9
The last digit, 2.
The digit in the ones place is 7.
It has no precision, since there is no following number.
4
The "2".
1
9
If the number is odd, the last digit is odd. That means the ten's digit must be twice the one's digit. There are only four two-digit numbers where the ten's digit is twice the one's digit: 21, 42, 63, 84. Check which of these satisfy all the clues.
The unit digit of the square of 81 will be 1.
The last digit: the 6.The last digit: the 6.The last digit: the 6.The last digit: the 6.
7