If a person purchases 15 of the 3,000 tickets sold in a raffle that awards one prize, what is the probability that this person will not win?
(A) 0
(B) 1/200
(C) 1/2
(D) 199/200
(E) 1
Answer: D
Source: GMAT prep
If a person purchases 15 of the 3,000 tickets sold in a raffle that awards one prize, what is the probability that this
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Let's use the complement: P(Event A happening) = 1 - P(Event A not happening)BTGModeratorVI wrote: ↑Thu Nov 26, 2020 1:15 pmIf a person purchases 15 of the 3,000 tickets sold in a raffle that awards one prize, what is the probability that this person will not win?
(A) 0
(B) 1/200
(C) 1/2
(D) 199/200
(E) 1
Answer: D
Source: GMAT prep
Given: P(person wins) = 15/3000
So, P(person does NOT win) = 1 - 15/3000
Simplify to get: P(person does NOT win) = 1 - 1/200
Rewrite with common denominator to get: P(person does NOT win) = 200/200 - 1/200 = 199/200
Answer: D
Cheers,
Brent