## Biology Qbank 1 Molecular Genetics Q 17

jmartin
Posts: 17
Joined: Sat Mar 03, 2018 12:55 pm

### Biology Qbank 1 Molecular Genetics Q 17

After reading the explanation for the correct answer I still don't understand it. I feel that I'm missing something.
NS_Tutor_Katelyn
Posts: 157
Joined: Wed May 30, 2018 11:51 am
Location: Minnesota
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### Re: Biology Qbank 1 Molecular Genetics Q 17

jmartin wrote:After reading the explanation for the correct answer I still don't understand it. I feel that I'm missing something.
Could you clarify please what you don't understand or what's confusing you? The more we know the easier it is to help.
Katelyn Sawyer
Senior Tutor
katelyn@nextsteptestprep.com
jmartin
Posts: 17
Joined: Sat Mar 03, 2018 12:55 pm

### Re: Biology Qbank 1 Molecular Genetics Q 17

The answer that was given was 1/3. How do you get this answer? Part of the explanation is "only one-third of all whole numbers are multiples of 3". Is this knowledge that I should have already or was there a formula used to get this answer?
jmartin
Posts: 17
Joined: Sat Mar 03, 2018 12:55 pm

### Re: Biology Qbank 1 Molecular Genetics Q 17

NS_Tutor_Katelyn wrote:
jmartin wrote:After reading the explanation for the correct answer I still don't understand it. I feel that I'm missing something.
Could you clarify please what you don't understand or what's confusing you? The more we know the easier it is to help.
The answer that was given was 1/3. How do you get this answer? Part of the explanation is "only one-third of all whole numbers are multiples of 3". Is this knowledge that I should have already or was there a formula used to get this answer?
NS_Tutor_Will
Posts: 49
Joined: Fri May 25, 2018 9:15 am

### Re: Biology Qbank 1 Molecular Genetics Q 17

Hi,

Sorry for the delayed response. I would say that your question requires outside knowledge, but more in a logical sense than in a content, formula-based sense. The statement that only 1/3 numbers are multiples of three makes sense logically, because the multiples of three are:

3, 6, 9, 12, ...

and the non-multiples of three are:

1, 2, 4, 5, 7, 8, 10, 11, ...

So, in the same space on the number line, four out of twelve numbers are multiples of three and eight out of twelve are not. Thus, one third of whole numbers are multiples of three.

I hope this helps!
Will