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numbers $=\{49514321196285836977\}$

Partition$($numbers$,5,9)$ is called.

Assume quicksort always chooses the element at the midpoint as the pivot.

What is the pivot?

What is the low partition? $,$

What is the high partition? $\{,|\}$

What is numbers after Partition$($numbers$,5,9)$ completes? $\{$