Question 1203531
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find the probability distribution and distribution function 
for the numbers of head when 3 balanced coins are tossed
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These words  " probability distribution "  and  " distribution function "  mean the same:

they denote the same conception.   In other words,  they are synonyms.


Therefore, in your post there is no need to ask twice about the same thing.

To ask once is just quite enough.



Being too pathetic doesn't make your post better. 

Asking twice, you demonstrate lack of knowledge on the subject.