4MA0 Foundation June 2013 Paper 2R Q9
9 Here are ten counters.
Each counter has a number on it.
Fern puts the ten counters in a bag.
She takes at random a counter from the bag.
(a) Find the probability that the number on the counter is 7 (1)
(b) Find the probability that the number on the counter is less than 8 (1)
(c) Find the probability that the number on the counter is an odd number. (2)
(d) Find the probability that the number on the counter is 3 or 4 (2)
| Scheme | Marks |
|---|---|
| \(\dfrac{1}{10}\) | B1 |
| (1) |
Notes
B1: Penalise only first occurrence of incorrect notation.
| Scheme | Marks |
|---|---|
| 1 | B1 |
| (1) |
Notes
B1: Accept \(\dfrac{10}{10}\) or \(\dfrac{1}{1}\)
| Scheme | Marks |
|---|---|
| \(\dfrac{7}{10}\) | M1 A1 |
| (2) |
Notes
M1 A1: M1 for fraction with a denominator of 10
A1 for \(\dfrac{7}{10}\)
| Scheme | Marks |
|---|---|
| \(\dfrac{6}{10} + \dfrac{3}{10}\) oe | M1 |
| \(\dfrac{9}{10}\) | A1 |
| (2) |