# what is the PROBABILITY OF THIS (2)?

#### Dencology

##### Full Member
10+ Year Member
guys what does this mean:

two numbers b/w 1 and 30 inclusive are drawn in a contest. what is the probability that both numbers are eve?

they have (15/30)15/30

i thought i should be (15/30)(14/29)

but the answer is (15/30)(15/30)= 1/4

how come? (does this mean that they put the first number back in and then drawn for the second time?)

#### MTD52

##### Class of 2014
10+ Year Member
5+ Year Member
guys what does this mean:

two numbers b/w 1 and 30 inclusive are drawn in a contest. what is the probability that both numbers are eve?

they have (15/30)15/30

i thought i should be (15/30)(14/29)

but the answer is (15/30)(15/30)= 1/4

how come? (does this mean that they put the first number back in and then drawn for the second time?)

I haven't done probabilities in years, but I think the only logical explanation is that yes, they put the first number back. It doesn't say that the numbers are kept out, and that's the only thing that makes sense to me

#### sciencegod

##### Super Member
10+ Year Member
it does no t imply nowhere that the number is removed and not retrnd

#### Dencology

##### Full Member
10+ Year Member
it does no t imply nowhere that the number is removed and not retrnd

Yes, thats what i what thinking. anyway, skip and move on. lolol

#### joonkimdds

##### Senior Member
10+ Year Member
7+ Year Member
I asked exact same question before and I am surprised that I remember that I asked this question before, LOL. This is from DAT destroyer, am I right?

Many Math questions are too confusing to even start solving.

This thread is more than 12 years old.

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