book Maths Puzzle Numerical Ability

Which number has the largest and smallest absolute value

-2,6,-1,0,3,5

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book Other Question

Two jets leave the same airfield at the same time, traveling in opposite directions. One jet travels 80 miles faster than the other. In 8 hours the planes are 7200 miles apart. What is the speed of each plane? Express 1 + 2i in polar form.