Which digit(s) makes 3,71[_] divisible by 3?
I don't need help with the answer but what is [_] or is the _ for the missing number?
I think it is for the missing number, which would be 4.
I think it is for the missing number, which would be 1, 4 or 7
Oh. Okay thanks
In the question, the [_] represents a missing digit. So, to make the number 3,71[_] divisible by 3, we need to find the possible values for the missing digit.
To determine if a number is divisible by 3, we look at the sum of its digits. If the sum is divisible by 3, then the number itself is also divisible by 3.
Considering this, we need to find the missing digit that, when added to the existing digits (3, 7, and 1), will result in a sum divisible by 3.
Let's add the existing digits: 3 + 7 + 1 = 11.
To make 11 divisible by 3, we need to add a number to it that will bring the sum to a multiple of 3. The closest multiple of 3 greater than 11 is 12.
Therefore, in order for 3,71[_] to be divisible by 3, the missing digit should be 2.
So, the number 3,712 is divisible by 3.