Liam writes a number on the card. It is greater than 800 but smaller that 830. The sum of all digits is 12. How many possible numbers are there?
The digit in the hundred place is 8.
Sum of the digit in the tens place and the ones place
= 12 - 8
= 4
Hundreds |
Tens |
Ones |
8 |
0 |
4 |
8 |
1 |
3 |
8 |
2 |
2 |
8 |
3 |
1 |
The possible numbers are 804, 813, 822 and 831.
Number of possible numbers: 4
Answer(s): 4