exam Maths Puzzle Numerical Ability

Remove the parenthesis and simplify when possible.

8d-(-7c-2d)

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exam Other Question

Perform the row operations on the given augmented matrix.
a.) R<sub>2</sub> = 3r<sub>1</sub> + r<sub>2</sub>
b.) R<sub>3</sub> = -2r<sub>1</sub> + r<sub>3</sub>
c.) R<sub> In how many zeroes does 127! end? (Note: 127! means 127(126)(125)...(1)).