Foundation November 2017 Paper 2 Q7
7 Steve says,
“There are more prime numbers between 20 and 30
than there are between 10 and 20”
Is Steve right?
You must show how you get your answer. (2)
| Answer | Mark | Notes |
|---|---|---|
| No (supported) | B1 | for showing 11 or 13 or 17 or 19 with no non-prime numbers between 10 and 20, or for showing 23 or 29 with no non-prime numbers between 20 and 30. Ignore any numbers shown below 11. |
| C1 | “No” supported by listing 11, 13, 17, 19 and 23, 29 and no non-prime |