### Brain Teasers

# A Number

There are 20 players in Maxvu's sports team, numbering from 1 to 20. What is Maxvu's number? Of the choices below, only one is correct.

A. an odd number

B. an even number

C. a prime number

D. a composite number

A. an odd number

B. an even number

C. a prime number

D. a composite number

### Answer

It's easily seen that one of A and B must be correct, as a number is either odd or even. This means that neither C nor D is correct. If a number is neither prime nor composite, it can only be 1, so choice A is correct.Hide Answer Show Answer

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## Comments

the easeist way to figure it out is if it's his team he would be the first number 1 odd

Enjoyed it! (Figured it out pretty quickly, but then again I used to teach math.)

0 is also neither prime nor composite, but who cares 'bout zilch these days .

I think this should be in the Math section...

All I know is that with 20 players, Maxvu (?) will not see too much playing time !!! Maxvu ???

Well don't I feel stupid... I don't even know what a composite number is.

Thanks for the morning brain workout.

Thanks for the morning brain workout.

Really neat concept, but very simple. I was so intrigued at the idea, that since i could not remember what a composite number is either, I looked it up. right after I read the definition, the answer was obvious.

Odd number could be composite or prime number too. The answer isn't guessable

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