You need to make sure the worksheets you are going to delete is absolutely no use anymore because you cannot bring them back after deleting them. To delete multiple worksheets that are adjacent, please follow the steps below:
Step 1: Click the name of the first worksheet you need to delete;
Step 2: Press and hold the "Shift" Key;
Step 3: Click the name of the last worksheet to delete;
Step 4: Move your mouse on the name of any of the selected worksheets and right click;
Step 5: Click "Delete" in the new window.