Noticing a little issue with the ‘match each number with its correct position’ questions. It’s showing that the correct answer is a state where everything is blank. Noticed it on the following two problems:

These are from ‘Revisiting the Number Line’ and ‘Quick Percent Increase and Decrease’. By the way loving PrepSwift so much. It’s proved invaluable.

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I took a look at this. It turns out that these questions have a blank answer, which means that someone that matches every option on the left-hand side will get a 0! Clearly something has gone wrong, and we’re investigating.

**Edit**: this has been fixed. Please let us know if any other matching problems exhibit this issue.

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Hey! Can you please help me with this question? I don’t think my answer is wrong? But if it is, I am unable to see the option to go to the video solution.

PrepSwift: Nifty Factor-Finding System

Question 4 of 4

That question doesn’t have a video/written solution (yet).

I found my error. Thanks for the reply!

I get that max value of q will be when r is min. Min value of r as a positive integer can be 1. Since q is less than equal to r, and q is also a positive integer, r cannot be equal to 1.

This eliminates option 1. Max value of q cannot be 1 either because r cannot be equal to 1. This eliminates option 5.

How do I eliminate option 2,3,4? Assume numbers or replace these options as values of q and check?

That question now has a written solution - have you seen it?

Also: assuming numbers is a good strategy for this problem.

Yes, saw it - the strategy is assuming numbers. I was trying to solve it with algebra.

You can equate the correct answer (\sqrt{p}) with the other options to show that they don’t always match.