Determine whether the following statement is true or false: If both matrices A of the size 2 x 5 and B of the size 2 x 5 have row echelon forms (REF) then a matrix AB (if possible) must have a row echelon form (REF). Select one: O True O False

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Q: Prove that 3 devides 17k+1-2*5k+3+11k+3whenever k is a non-negative integer.

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