Posted by **Krisy** on Tuesday, September 12, 2006 at 9:12pm.

Hi,

This is a really easy question. I think I am analyzing it too much:

Find the cardinal number of the following set:

{1,3,5,.....1001}

Thanks in advance.

Ok, the cardinal number is the numbe of members of a set. The set you've given us the first xxx odd numbers.

Hint:{1} is the first odd number, {1,3} is the first (3+1)/2 odd numbers, {1,3,5) is the first (5+1)/2 odd numbers, (1,3,5,7,...2k+1} is the first ((2k+1)+1)/2 odd numbers etc...

Oh, I was over analyzing! Thanks so much Roger!

I kinda' suspected that -lol!

You're welcome.

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