Rael writes a number on the card. It is greater than 900 but smaller that 920. The sum of all digits is 12. How many possible numbers are there?
The digit in the hundred place is 9.
Sum of the digit in the tens place and the ones place
= 12 - 9
= 3
Hundreds |
Tens |
Ones |
9 |
0 |
3 |
9 |
1 |
2 |
The possible numbers are 903 and 912.
Number of possible numbers: 2
Answer(s): 2