The number of non-negative integer solut...

The number of non-negative integer solutions of x+y+z+w=10 must, be same as:

A

Number of ways of distributing 10 identical objects in four distinct boxes

B

Number of selections of 10 objects from a lot containing four varieties of objects

C

of selections of four objects from a lot containing 10 distinct objects

D

Number of results of a 10-match series between two countries if a match ends either in a win or loss or a draw

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The correct Answer is:

A, B

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