exam Maths Puzzle Numerical Ability

Solve each compound inequality. Write interval notation.

x - 3 > 7 or 3 - x > 2

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exam Other Question

The point (-1/2,sqrt3/2)on the unit circle is rotated 60 degrees clockwise. Determine the coordinates of the new point. Bob is moving and all of his CDs are mixed up in a box. Twelve CDs are rock, eight are jazz, and five are classical. If he reaches in the box and selects them at random, find each possibility.
What is the possibility of 3 rock cds?