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Warren flipped a coin and rolled a 20-sided number cube. What is the probability that his coin landed on tails and his number cube rolled a factor of 20? answer as a simplified fraction.

Sagot :

Warren flipped a coin and rolled a 20-sided number cube. What is the probability that his coin landed on tails and his number cube rolled a factor of 20? answer as a simplified fraction.​

we have that

the probability that his coin landed on tails is

P=1/2

and

Factors of 20 are ----> 1,2,4,5,10,20

so

The probability that his number cube rolled a factor of 20 is

P=6/20=3/10

therefore

the probability that his coin landed on tails and his number cube rolled a factor of 20 is equal to

P=(1/2)*(3/10)

P=3/20