Which of the following numbers are divisible by 3?
121,212

Answer

To determine if the number 121,212 is divisible by 3, we can follow these steps:

### Step 1: Identify the digits of the number
The number we are examining is 121,212. The digits of this number are 1, 2, 1, 2, 1, and 2.

### Step 2: Sum the digits
Now, we will add these digits together:
- 1 + 2 + 1 + 2 + 1 + 2

Calculating this step by step:
- 1 + 2 = 3
- 3 + 1 = 4
- 4 + 2 = 6
- 6 + 1 = 7
- 7 + 2 = 9

So, the sum of the digits is 9.

### Step 3: Check if the sum is divisible by 3
Next, we need to check if the sum (which is 9) is divisible by 3. We can do this by dividing 9 by 3:
- 9 ÷ 3 = 3

Since 3 is a whole number, we can conclude that 9 is divisible by 3.

### Step 4: Conclusion
Since the sum of the digits (9) is divisible by 3, we can conclude that the original number (121,212) is also divisible by 3.

Thus, **121,212 is divisible by 3**.

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