What is the smallest 5-digit number which can be formed with the digits 4, 0 and 9?

Options

A. 40940
B. 40009
C. 99940
D. 90004

Answer

To find the smallest 5-digit number that can be formed using the digits 4, 0, and 9, we can follow these steps:

### Step 1: Identify the digits
The digits we have are 4, 0, and 9.

### Step 2: Understand the constraints
A 5-digit number cannot start with 0, as that would make it a 4-digit number. Therefore, the first digit must be either 4 or 9.

### Step 3: Choose the smallest starting digit
The smallest digit we can use to start the number is 4. So, we will start our number with 4.

### Step 4: Fill in the remaining digits
After placing 4 as the first digit, we want to fill the remaining four digits with the smallest possible digits. The smallest digit available is 0.

### Step 5: Construct the number
We can fill the next three digits with 0s, and since we need a total of 5 digits, we will place 9 as the last digit.

So, the number will be: **40009**.

### Final Answer
The smallest 5-digit number that can be formed with the digits 4, 0, and 9 is **40009**.

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