4MA0 Foundation June 2011 Paper 1 Q11
11
Premila has two spinners.
The sides of one spinner are labelled 2, 4 and 8
The sides of the other spinner are labelled 1, 3, 5 and 7
Premila spins both spinners.
(a) List all the possible outcomes.
One has been done for you.
(2, 1) (2)
One has been done for you.
(2, 1) (2)
(b) Both spinners are fair.
Find the probability of an outcome in which the number on the 3-sided spinner is greater than the number on the 4-sided spinner. (2)
Find the probability of an outcome in which the number on the 3-sided spinner is greater than the number on the 4-sided spinner. (2)
| Scheme | Marks |
|---|---|
| (2,3) (2,5) (2,7) (4,1) (4,3) (4,5) (4,7) (8,1) (8,3) (8,5) (8,7) and no extras | B2 |
| (2) |
Notes
B2: B1 for 6 or more ignoring extras
| Scheme | Marks |
|---|---|
| \(\dfrac{7}{12}\) | M1 A1 |
| (2) | |
| (Total 4 marks) |
Notes
M1
A1: for denominator ft from (a) if at least B1 scored
ft from (a) if M1 scored