I made a master slide on powerpoint and inserted a new slide to the main page which has a title and subtitle layout. The question says that this new slide shouldn't display the master slide items of the other slides. how to do this?

To ensure that the new slide you inserted doesn't display the master slide items from other slides, you can follow these steps:

1. Open your PowerPoint presentation and go to the slide where you want to insert the new slide.
2. Click on the "Home" tab in the PowerPoint ribbon at the top of the screen.
3. In the "Slides" group, click on the down arrow below the "New Slide" button. This will open a drop-down menu with different slide layout options.
4. From the drop-down menu, select the slide layout that best fits your needs. In this case, you mentioned a title and subtitle layout, so choose a layout that matches that description.
5. Once you've selected the desired slide layout, a new slide will be inserted into your presentation, and it will not display any master slide items from other slides.

By selecting a specific slide layout for the new slide, PowerPoint automatically applies the formatting and content placeholders defined in the selected layout, rather than inheriting the design and content from the master slide. This allows you to have a slide with a different appearance while maintaining consistency throughout your presentation.