Mathematics  Cardinal Number
posted by Krisy on .
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.

I don't understand this. I have the same question and i don't understand how to get it. Please explain further.