Maths is scary.. help

[misskatie90]

Can anyone help me with this maths question..

Sergei has a 3/5 chance of getting his questions correct.
Alex has a 3/4 chance of getting her questions correct.

What is the probability of Sergei getting his next two questions correct?

Can you also show me how to work it out.

Thank you

From your 3 threads you clearly need to go right back to the beginning of probability understanding.
Ask your tutor to help you or point you at correct level info.

(What did you get for your GCSE?)

On your other thread I suggested a GCSE foundation level guide. You may need to go back to KS3.

Draw a probability tree diagram. You multiply along the branches and then add along the leaves if needed.

@misskatie90

Can anyone help me with this maths question..

Sergei has a 3/5 chance of getting his questions correct.
Alex has a 3/4 chance of getting her questions correct.

What is the probability of Sergei getting his next two questions correct?

Can you also show me how to work it out.

Thank you

Assume that each of the following two attempts are Independent to each other but is with a chance of 3/5 correct.

The probability of getting continuously two time correct should be square (3/5), which is 9/25.

Sergei’s next question has 3/5 chance of getting it right. The question after that also has 3/5 chance. But to get them both right:
3/5 x 3/5 = 9/25