- Russian Roulette - 4 blanks 2 bullets, all in a row. If someone shoots a blank next to you, would you take another shot or spin. Work out the probability.
- A Bat and a Ball cost a total of £1.10, if the bat costs £1 more than the ball what is the cost of the ball.
A bat and a ball- The ball costs £0.05 (£1.05 + £0.05 = £1.10)
Russian Roulette- If you took another shot then you would have 2 out of 5 chance of getting a bullet, if you spun then you would have a 2 out of 6 chance of getting a bullet, because you have the chance of getting an empty/used bullet that you couldn't have got in the first way.
Bat and ball are 1.05 and 0.05.
I am thinking that it is not as simple as 2/5 or 40% chance of getting shot. The person next to you fired a blank therefore you only need to account for 1 live round if they are in order 4 blanks and 2 live?
so £1.10 = the price of the ball + the price of the bat
The price of the bat = £1 + the price of the ball
so £1.10 = the price of the ball + ( £1 + the price of the ball)
£1.10 = 2(the price of the ball) + £1
£0.10 = 2(the price of the ball)
£0.05 = the price of the ball