How can I show an exam question I found to my tutor?

A picture of an exam question can be pasted on the whiteboard

If the question in on a paper, you can take a picture of it and then in whichever way you know transfer the picture to your computer and then directly upload the picture directly onto the whiteboard. If the question is from a website or in some other digital file, the quickest is to use the snipping tool and capture it from your computer screen and simply paste the picture onto the whiteboard.

If you are the user of Apple computers, then a key combination of Shift+Cmd+4 lets you take a snap shot of any information on the screen. Once you take a snap of the screen, often the picture appears on your desktop, then you can simply drag and drop the picture onto the whiteboard.