i need to write the missing digit to make each number divisible by 3

1,843,#89

i got the missing number as : 3
s/b 1,843,389 is that right?

#2 i need to write the missing digit to make each number divisible by 8

2,4#2 i cant figure that out
i got : 2,422? is that right?

#3 i need to write the missing digit to make each number divisible by 8
1,325,#84
i got: 4
so should be: 1, 1,325,484 is that right?

1. A number is divisible by 3 if the sum of its digits is divisible by 3

so far we have a sum of 33, which is divisible by 3
so the missing # could be 0, 3, 6, or 9

2. The fist 2 digits divide by 8, so #2 must divide by 8
only possible case is 32 or 72

3. Any number is divisible by 8 if its last 3 digits evenly divide by 8
184 does, so does 384, 584, 784, and 984
so 1325184, 1325384, etc

Didn't get a answer

To determine the missing digit in the given numbers and make them divisible by a certain number, you need to apply the divisibility rules for that specific number.

1. Divisible by 3:
To check if a number is divisible by 3, you need to sum up its digits. If the sum is divisible by 3, then the original number is divisible by 3. In the first number, 1,843,#89, the sum of the digits is 1+8+4+3+8+9 = 33. Since 33 is divisible by 3, we can conclude that the missing digit should make the sum of all digits divisible by 3. So, in this case, the missing digit should be 4, making the number 1,843,489.

2. Divisible by 8:
To check if a number is divisible by 8, you need to look at the last three digits of the number. If these three digits form a number divisible by 8, then the original number is divisible by 8. In the second number, 2,4#2, we need the last three digits to be divisible by 8. The possible values for the missing digit could be 0, 3, 6, or 9 to form a divisible number (422, 432, 462, 492). Among these options, we find that 432 is divisible by 8, so the missing digit should be 3, making the number 2,433,2.

3. Divisible by 8:
Similar to the previous situation, we need to look at the last three digits of the number. In the third number, 1,325,#84, we need the last three digits to be divisible by 8. The possible values for the missing digit could be 0, 2, 4, 6, or 8. Testing these options, we find that 484 is divisible by 8, so the missing digit should be 4, making the number 1,325,484.

Therefore, the correct answers are:
1. 1,843,489
2. 2,433,2
3. 1,325,484