Question 731746
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you have an equally likely chance of choosing an integer 
from 1 through 20 find the probability of choosing {{{highlight(cross(and))}}} <U>an</U> odd number.
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<pre>
From 1 to 20 inclusive, there are 10 odd integer numbers and 10 even integer numbers.


Therefore, the probability of randomly choosing an odd integer number from 1 to 20 is

    {{{10/20}}} = {{{1/2}}},


which is also obvious based on your common sense.
</pre>

Solved.


The answer in the post by @lynnlo is irrelevant,
so ignore his post.