Question

How many three-digit numbers have the first digit equal to the sum of the other two digits?

Answer 1

Answer:

Don't know

Step-by-step explanation:

the answer

Answer 2

Answer:

We have four digits.

The numbers we need to make have 3 digits.

There are 4 choices for the first digit, 4 choices for the second digit and 4 choices for the third digit since repetition is allowed.

Hence, the total number of 3 digit numbers that can be made is equal to:

4×4×4=4

3