Question

9. Determine the sum of all the numbers that can be formed with the digits 1, 2, and 3, each digit occurring only once in a number.​

Answer 1

Answer:

Please mark my answer as the Brainliest

Step-by-step explanation:

The first step is to calculate the number of numbers that can be formed with 1,2 and 3.

with 1,2,3 single digit numbers - 1, 2 and 3

with 1,2,3 double digit numbers - 12, 23, 31, 21, 32, 13

with 1,2,3 triple digit numbers - 123, 132, 321, 312, 213, 231

so the sum of the above numbers are - 1470