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# Help with GCSE Maths Q? watch

1. 1.Jimmy runs a game to make money

It costs £1 to play the game
A player flips two fair coins. If a player gets two heads, they win £3.

(a) How much profit does Jimmy expect to make if the game is played 100 times.

(Second part)

Lujain says that the game isn't very fair.

Jimmy offers to change the game.
He gives Lujain four coins to flip.
If she gets three or four heads, then she will win £3

(b) Does Lujain have more chance of winning the new game?

Show how you decide

I got £25 for the first part which I think is wrong.
For the 2nd Part I tried to do a tree diagram but it was just to big to understand.... is there an alternative gcse way of using the tree diagram for probability??

Thanks!
2. Going to move this to the Maths forum as it's the best place for these questions
3. (Original post by queenfluffy23)
1.Jimmy runs a game to make money

It costs £1 to play the game
A player flips two fair coins. If a player gets two heads, they win £3.

(a) How much profit does Jimmy expect to make if the game is played 100 times.

(Second part)

Lujain says that the game isn't very fair.

Jimmy offers to change the game.
He gives Lujain four coins to flip.
If she gets three or four heads, then she will win £3

(b) Does Lujain have more chance of winning the new game?

Show how you decide

I got £25 for the first part which I think is wrong.
For the 2nd Part I tried to do a tree diagram but it was just to big to understand.... is there an alternative gcse way of using the tree diagram for probability??

Thanks!
first part is correct

no need for tree

HHHH
HHHT
HHTH
HTHH
THHH

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