Christopher writes a number on the card. It is greater than 200 but smaller that 230. The sum of all digits is 6. How many possible numbers are there?
The digit in the hundred place is 2.
Sum of the digit in the tens place and the ones place
= 6 - 2
= 4
Hundreds |
Tens |
Ones |
2 |
0 |
4 |
2 |
1 |
3 |
2 |
2 |
2 |
The possible numbers are 204, 213 and 222.
Number of possible numbers: 3
Answer(s): 3