Calculate the sum of all possible two-digits numbers using the digits 3 and 4?

33 + 34 + 43 + 44 = 154

To calculate the sum of all possible two-digit numbers using the digits 3 and 4, we can consider all the combinations of these digits.

The two-digit numbers can be formed by placing the digit 3 in the tens place and the digit 4 in the ones place, or vice versa.

1. Place 3 in the tens place and 4 in the ones place:
- The number formed is 34.

2. Place 4 in the tens place and 3 in the ones place:
- The number formed is 43.

To calculate the sum of these two numbers, we add them together:
34 + 43 = 77

Therefore, the sum of all possible two-digit numbers using the digits 3 and 4 is 77.

To calculate the sum of all possible two-digit numbers using the digits 3 and 4, we need to find all the combinations of these digits and then sum them up.

To start, let's list down all the possible two-digit numbers using the digits 3 and 4:

1. 34
2. 43

Now, we can sum these two numbers:

34 + 43 = 77

So, the sum of all possible two-digit numbers using the digits 3 and 4 is 77.