Gcse maths probability questions higher
Hayley and Asha are playing a game. In each round they both spin a spinner with 5 equal sections labelled 1 to 5, and whoever gets the higher score wins the round. If the winner spins a 5, she scores 2 points, and if the winner spins less than 5, she scores 1 point. If both players spin the same number, no one wins a point.
What is the probability that Hayley wins 1 point in the first round?
What is the probability that Hayley wins 2 points in the first round?
Apparently the answers are 6/25 and 4/25 but I dont understand how you get that?!
What is the probability that Hayley wins 1 point in the first round?
What is the probability that Hayley wins 2 points in the first round?
Apparently the answers are 6/25 and 4/25 but I dont understand how you get that?!
Original post by Sammyboy1234
Hayley and Asha are playing a game. In each round they both spin a spinner with 5 equal sections labelled 1 to 5, and whoever gets the higher score wins the round. If the winner spins a 5, she scores 2 points, and if the winner spins less than 5, she scores 1 point. If both players spin the same number, no one wins a point.
What is the probability that Hayley wins 1 point in the first round?
What is the probability that Hayley wins 2 points in the first round?
Apparently the answers are 6/25 and 4/25 but I dont understand how you get that?!
What is the probability that Hayley wins 1 point in the first round?
What is the probability that Hayley wins 2 points in the first round?
Apparently the answers are 6/25 and 4/25 but I dont understand how you get that?!
If Hayley rolls a 1, what is the probability of her winning 1 point?
If Hayley rolls a 2, ...?
....5...?
Make a grid:
1 2 3 4 5
1 0 1 1 1 2
2 0 0 1 1 2
3 0 0 0 1 2
4 0 0 0 0 2
5 0 0 0 0 0
Now a) 6/25 and b) 4/25
The only point we miss is that when both players spins, the person with high number will get the point. If other person is less number on Spin she losses. When Hayley gets 2 on her spin and if Asha gets greater 2, that means Hayley got 0. Then we follow rules of >5 is score 2 and if same numbers for both is Zero.
1 2 3 4 5
1 0 1 1 1 2
2 0 0 1 1 2
3 0 0 0 1 2
4 0 0 0 0 2
5 0 0 0 0 0
Now a) 6/25 and b) 4/25
The only point we miss is that when both players spins, the person with high number will get the point. If other person is less number on Spin she losses. When Hayley gets 2 on her spin and if Asha gets greater 2, that means Hayley got 0. Then we follow rules of >5 is score 2 and if same numbers for both is Zero.
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