exam Maths Puzzle Numerical Ability

a man walks 9 blocks south,then decides to go back 4 blocks north.where does this bring him?

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exam Other Question

What is the square root of 8 times the aquare root of 12?

What is 3 times the aquare root of 5 times the aquare root of 5?
please help
Use long division to divide {{{6x^3+x^2-12x+5}}} by {{{3x-4}}}