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Question 140

There are 11 pens in a box.

5 pens are red. 4 pens are blue.

One pen is selected at random from the box.

The probability that the pen is green is 211\displaystyle \frac{2}{11}112​. The probability that the pen is black is 0.

a.

How many pens are green?

[1]
b.

How many pens are black?

[1]
Markscheme

Probability Questions

  1. GCSE
  2. /Maths
  3. /Probability

236 exam-style questions on OCR GCSE Maths Probability. Each one has a worked solution and a mark scheme showing where the marks go.

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