Probability Y9 problem

A

Asterix

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Hello
there are four girls and three boys in a group. Their names are shown in the sample space diagram, (There is a net diagram of 4x3 dots. 4 girls horizontally and 3 boys vertically). First, he asks for the probability that Maha is not chosen. This is quite easy as she can be chosen by 3/12 ways so not chosen by 9/12 or 3/4. Question two was Shen is not chosen at that is 8/12 or 2/3. Now the question that I don't get is neither Maha nor She is chosen. I thought that this should be 3/4 x 2/3 = 1/2 but the answer is 11/12 so my understanding of the question might be wrong. Any help please?
 
Because you did not give us the statement of the problem EXACTLY and COMPLETELY as we ask you to do in Read Before Posting, we must guess at what the actual problem is.

Furthermore, it is absolutely impossible for there to be 3/12 = 0.25 number of ways for someone to selected at random. That number must be a probability, not an enumeration.

In short, you admit you do not understand the question, but do not bother to tell us what the question is.
 
There are four girls and three boys in a group. Their names are shown in the sample space diagram. One boy and one girl are chosen at random
What is the probability that neither Maha nor Shen is chosen?
Screenshot_20210313-183452_WhatsApp.jpg
 
JeffM said:
Because you did not give us the statement of the problem EXACTLY and COMPLETELY as we ask you to do in Read Before Posting, we must guess at what the actual problem is.

Furthermore, it is absolutely impossible for there to be 3/12 = 0.25 number of ways for someone to selected at random. That number must be a probability, not an enumeration.

In short, you admit you do not understand the question, but do not bother to tell us what the question is.
Click to expand...
You can just say that you don't know and by the way 3/12 is a probability
 
The correct answer to c is 6/12 or 1/2. Just looking at the grid we can cross out the first row and first column leaving 6 out of 12 options.
 
You are correct. The answer of 11/12 is the probability of not picking both. Neither... nor questions are tricky.

Good work.
 
I get it now Thank you all. My problem was understanding English rather than Maths :)
 
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