Jump to content

Menu

Please. Could someone solve this math problem from Saxon 7/6 3rd ed.


Recommended Posts

We are not math minded individuals. You know how sometimes you look at a problem and it just doesn't register? Maybe you don't:D. Unfortunately, it happens often around here.;) So if you all could be kind enough to help with this one, we'd greatly appreciate it!

 

It is on page 650 of the 3rd ed. 7/6 Saxon book, #23.

 

On a 20-question multiple choice test with four choices for each question, how many questions are likely to be answered correctly simply by guessing each answer?

 

Thanks again!

Link to comment
Share on other sites

If there are 4 choices, you have a 1 in 4 chance of guessing correctly. Therefore, 1/4 of 20 questions is 5.

Another way of looking at this is if there are 4 questions, you have a 1 in 4 chance of guessing correctly. This means that 25% of the time you would be likely to guess correctly. 25% of 20 questions is 5.

HTH.

Erika

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...