GeminiHeat wrote:
When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?
A. 1/8
B. 1/4
C. 1/3
D. 3/8
E. 1/2
P(3 matching tosses) = P(ANY result on 1st toss
AND 2nd toss matches 1st toss
AND 3rd toss matches 2nd toss)
= P(ANY result on 1st toss)
x P(2nd toss matches 1st toss )
x P(3rd toss matches 2nd toss)
= 1
x 1/2
x 1/2
= 1/4
Answer: BCheers,
Brent