A roulette wheel has 38 slots around the rim, the first 36 slots are numbered fr

Question

A roulette wheel has 38 slots around the rim, the first 36 slots are numbered from 1 to 36. Half of these slots are red and the other half are black. The remaining 2 slots are numbered O and 00 and are green. A roulette wheel is spun in one direction, a small ivory ball is rolled along the rim in the opposite direction. The ball has an equally likely chance of falling into any of the 38 slots. Find the probability of the following: 2) a) the ball lands in a black slot b) the ball lands in 0 or 00 c) the ball does not land on a number from 1 to 12 d) the ball lands on an odd number of a green slot

Explanation / Answer

a)P(ball lands in a black spot) =18/38 =9/19 (As 18 slots are black out of 38)

b)P(ball lnads in 0 or 00) =2/38 =1/19 (As 2 slots are 0 or 00 out of 38)

c)ball does not land on number 1 to 12 =1-12/38 =26/38 =13/19

d)(please revert if it is odd number or green slot ; as probability for odd number of a green slot will be 0)

P(ball lands on odd numer or green slot)=(18+2)/38 =10/19

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