Mark against the correct answer
Which of the following is the correct order?

Options

A. `2.2 lt 2.02 lt 2.002 lt 2.222`
B. `2.002 lt 2.02 lt 2.2 gt 2.222`
C. `2.02 lt 2.22 gt 2.002 lt 2.222`
D. none of these

Answer

To solve the question of determining the correct order of the given decimal numbers, we will analyze each option step by step.

### Step 1: Understand the Decimal Numbers
The decimal numbers given in the options are:
- 2.2
- 2.02
- 2.002
- 2.222

### Step 2: Compare the Numbers
To compare decimal numbers, we can align them by their decimal points and compare digit by digit from left to right.

### Step 3: Analyze Each Option
**Option A: 2.2 < 2.02 < 2.002 < 2.222**
- Compare 2.2 (which can be written as 2.200) and 2.02 (which can be written as 2.020).
- 2.200 is greater than 2.020. Thus, this option is incorrect.

**Option B: 2.002 < 2.02 < 2.2 < 2.222**
- Compare 2.002 and 2.02: 2.002 is less than 2.020.
- Compare 2.02 and 2.2: 2.020 is less than 2.200.
- Compare 2.2 and 2.222: 2.200 is less than 2.222.
- This option is correct.

**Option C: 2.02 < 2.22 < 2.002 < 2.222**
- Compare 2.02 and 2.22: 2.020 is less than 2.220.
- Compare 2.22 and 2.002: 2.220 is greater than 2.002, so this part is incorrect.
- Thus, this option is incorrect.

**Option D: None of these**
- Since we found that option B is correct, option D is not applicable.

### Conclusion
The correct order of the decimal numbers is given in **Option B: 2.002 < 2.02 < 2.2 < 2.222**.

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