Jeremiah writes a number on the card. It is greater than 400 but smaller that 420. The sum of all digits is 7. How many possible numbers are there?
The digit in the hundred place is 4.
Sum of the digit in the tens place and the ones place
= 7 - 4
= 3
Hundreds |
Tens |
Ones |
4 |
0 |
3 |
4 |
1 |
2 |
The possible numbers are 403 and 412.
Number of possible numbers: 2
Answer(s): 2