Thursday, July 9, 2009

A number is drawn at random from the numbers 1 through 20. The probability the number is a multiple of 3 is?

A. 1/3


B. 1/5


C. 3/10


D. 7/20

A number is drawn at random from the numbers 1 through 20. The probability the number is a multiple of 3 is?
There are 6 multiples of 3 between 1 and 20,


so 6/20 is the probabiltiy, reduced equals 3/10 so


the answer is (c)
Reply:3,6,9,12,15,18





6/20 = 3/10
Reply:C- 3/10





because the multiples of 3 from 1-20 are


3, 6, 9, 12, 15, and 18


those are 6 numbers


put it in a fraction form like this:


6/20


and then reduce and you will get





3/10 as your answer
Reply:C. 3/10, because there are 6 multiples of 3 in 20, multiply 20 by 5 (to get to a hundred) then do the same with how many multiples, and there you go!
Reply:the answer is c


multipuls are 3 6 9 12 15 18


fraction is 6/20


lowest terms 3/10
Reply:c


3,6,9,12,15,18,


it is 6/20 which reduces to 3/10
Reply:c: 3,6,9,12,15,18 = 6 numbers. 6/20 reduces to 3/10
Reply:multiples of 3 between 1 and 20 are: 3,6,9,12,15, 18


so you have 6 chances out of 20 to get a multiple of 3





6/20 reduces to 3/10
Reply:C. 3/10 There are 6 multiples of three and 20 chances so it would be 6:20 or simplified 3:10
Reply:c. 3/10
Reply:c


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