Which of the following numbers is divisible by 15?

Options

A. 30560
B. 29515
C. 23755
D. 17325

Answer

To determine which of the following numbers is divisible by 15, we need to check for divisibility by both 5 and 3, since a number is divisible by 15 if it is divisible by both of these numbers.

Let's analyze the options step by step.

### Step 1: Check Divisibility by 5
A number is divisible by 5 if its last digit is either 0 or 5.

**Options:**
1. 1
2. 7
3. 3
4. 2
5. 5

**Analysis:**
- The only number that ends in 0 or 5 is **5**. Therefore, it is divisible by 5.

### Step 2: Check Divisibility by 3
A number is divisible by 3 if the sum of its digits is divisible by 3.

**Option Analysis:**
- **Option 1: 1**
- Sum of digits = 1
- 1 is not divisible by 3.

- **Option 2: 7**
- Sum of digits = 7
- 7 is not divisible by 3.

- **Option 3: 3**
- Sum of digits = 3
- 3 is divisible by 3.

- **Option 4: 2**
- Sum of digits = 2
- 2 is not divisible by 3.

- **Option 5: 5**
- Sum of digits = 5
- 5 is not divisible by 3.

### Step 3: Combine Results
Now we need to find a number that is divisible by both 5 and 3 to determine if it is divisible by 15.

- **Option 1: 1** - Not divisible by 5 or 3.
- **Option 2: 7** - Not divisible by 5 or 3.
- **Option 3: 3** - Divisible by 3 but not by 5.
- **Option 4: 2** - Not divisible by 5 or 3.
- **Option 5: 5** - Divisible by 5 but not by 3.

### Conclusion
None of the options are divisible by both 5 and 3, hence none of the numbers provided are divisible by 15.