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GCSE

8 pens in a bag, 3 blue, 5 red. 2 taken out at random, without replacement. Probability they are the same colour?

Either both blue or both red. 'OR' rule - add probabilities.Blue - first blue and second blue - 'AND' rule - multiply probabilities. 3/8 x 2/7 (as not replaced) = 6/56 = 3/28 (multiply top and bottom)Red ...

AS
Answered by Amy S. Maths tutor
3184 Views

A-Level question: How is blood glucose regulated?

Blood glucose must be regulated, normal blood glucose for a non-diabetic person is 4.0-5.9mmol. A low blood glucose (sugar) is harmful and a high blood can indicate diabetes. the pancreas and liver and cr...

EJ
Answered by Erin J. Biology tutor
3298 Views

What should I put in my Personal Statement?

A Personal Statement is a daunting task- yet it should be much easier than it is made out to be. You need to show what and why you chose the subject that you want to do. The majority of your Statement sho...

RC
Answered by Robert C. English tutor
1852 Views

What is close reading?

Close reading is when you really engage with a text and all of its connotations. It means that you need to look at what techniques, voice or person the author may be using but importantly it is not just s...

RC
Answered by Robert C. English tutor
1867 Views

My knowledge of biology is good but I never seem to get all the marks on a question - how can I get as many marks as possible?

This is a really common problem of knowing all the knowledge behind the question but still not getting the most marks you can. The best way to manage this is to simply learn the mark scheme; the questions...

BS
Answered by Bethan S. Biology tutor
2810 Views

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