Noah writes a number on the card. It is greater than 600 but smaller that 630. The sum of all digits is 10. How many possible numbers are there?
The digit in the hundred place is 6.
Sum of the digit in the tens place and the ones place
= 10 - 6
= 4
Hundreds |
Tens |
Ones |
6 |
0 |
4 |
6 |
1 |
3 |
6 |
2 |
2 |
The possible numbers are 604, 613 and 622.
Number of possible numbers: 3
Answer(s): 3