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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 ...

Answered by Amy S. Maths tutor
2654 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...

Answered by Erin J. Biology tutor
2709 Views

Translate: Il fallait que je crée moi-même quelques chansons pour qu’un agent sache que je comprenais quelque chose à la musique. Ce que ma mère m’avait dit m’apparaissait comme évident, même si je n’y avais jamais pensé de façon aussi précise.

I had to write some songs myself so that an agent would know that I understood something about music. What my mother had told me seemed obvious, even if I had never thought about it in such a precise way....

Answered by Natasha M. French tutor
1755 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...

Answered by Robert C. English tutor
1467 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...

Answered by Robert C. English tutor
1486 Views

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