Arrange the followng in descending order:
231657, 231698, 25487, 2367123, 2156781

Answer

To arrange the numbers 231657, 231698, 25487, 2367123, and 2156781 in descending order, we will follow these steps:

### Step 1: Identify the number of digits in each number
- 231657 has 6 digits.
- 231698 has 6 digits.
- 25487 has 5 digits.
- 2367123 has 7 digits.
- 2156781 has 7 digits.

### Step 2: Compare the numbers based on the number of digits
Since 2367123 and 2156781 have the most digits (7 digits), they are the largest numbers. Next, we will compare these two.

### Step 3: Compare the 7-digit numbers
- Compare 2367123 and 2156781:
- The first digit of both numbers is 2.
- The second digit of 2367123 is 3, while the second digit of 2156781 is 1. Thus, 2367123 is larger.

So, the largest number is **2367123**.

### Step 4: Compare the remaining numbers
Now we have the remaining numbers: 2156781, 231657, 231698, and 25487. Since 2156781 has 7 digits, it is larger than the others.

### Step 5: Compare the 6-digit numbers
Now we compare 231657 and 231698:
- The first 5 digits are the same (23165).
- The last digit of 231698 (8) is greater than that of 231657 (7).

So, the next largest number is **231698**.

### Step 6: Compare the last 6-digit number
Now we compare 231657 and 25487:
- 231657 has 6 digits, while 25487 has 5 digits. Therefore, 231657 is larger.

### Step 7: Finalize the order
Now we have:
1. 2367123
2. 2156781
3. 231698
4. 231657
5. 25487

### Final Answer:
The numbers arranged in descending order are:
**2367123, 2156781, 231698, 231657, 25487**

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