Your English needs some attention too! You have no punctuation, have not asked a question and the word you meant is "chosen".
The answer is 4C50 which is the binomial coefficient of 4 things chosen from 50 and is equal to
50!/(4! * 46!), which you should be able to calculate.
I made a typographical error.
The binomial coefficient involved is 50C4.
Paul M.
tutor
Mark: I think you are technically correct...but I answered the question as if they were different...perhaps numbered from 1 to 50.
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08/23/20
Mark M.
Since the balls are identical how can different combinations be considered?08/18/20