Ella writes a number on the card. It is greater than 700 but smaller that 720. The sum of all digits is 10. How many possible numbers are there?
The digit in the hundred place is 7.
Sum of the digit in the tens place and the ones place
= 10 - 7
= 3
Hundreds |
Tens |
Ones |
7 |
0 |
3 |
7 |
1 |
2 |
The possible numbers are 703 and 712.
Number of possible numbers: 2
Answer(s): 2