exam Maths Puzzle Numerical Ability

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2. (4 points) Write down all possible subsets of {a, b, c, d}

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exam Other Question

Natalie has some nickels, Dirk has some dimes, and Quincy has some quaters. Dirk has five more dimes than Quincy has quaters. If Natalie gives Dirk a nickel, Dirk gives Qunicy a di Two airplanes leave an airport at the same time.The heading of the first is 120 degrees and the heading of the second is 320 degrees.If the planes travel at the rates of 700 mph an