In MS Excel, which operator can be used in the criteria range to find duplicates?A>=B>>C<<D<>

The question seems to be incomplete as there is no specific operator mentioned for finding duplicates in MS Excel. However, to find duplicates in MS Excel, you can use the 'COUNTIF' function. This function counts the number of cells within a range that meet the given condition.

Here is a step-by-step guide on how to use it:

1. Suppose you have a list of data in column A and you want to find duplicates.

2. In cell B2 (assuming B1 is your header), type the formula =COUNTIF($A$2:$A2, A2)

3. Press Enter on your keyboard.

4. Click on the lower right corner of cell B2 (you'll see a small square, which is called the fill handle) and drag it down to copy this formula to all other cells in the column.

5. After you release your mouse, Excel will show the count of each item in column B. If the count is greater than 1, then it's a duplicate.

Please note that Excel doesn't have a specific operator for finding duplicates. Instead, you use a function to accomplish this.