Question

a) How many non-negative integer solutions are there to the following equation? ?1+?2+⋯+?10=5 b) How many...

a) How many non-negative integer solutions are there to the following equation?

?1+?2+⋯+?10=5

b) How many non-negative integer solutions are there to the following inequality?

?1+?2+⋯+?10<5

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