GRE
The average (arithmetic mean) of 67, 78, x, and 101
The average (arithmetic mean) of 66, 79, x, and 102
Percent increase in the weight of recycled newspapers in 1989 over 1988
Percent increase in the weight of recycled newspapers in 1990 over 1989
The total weight of m peanuts at a weight of n + 3 mg each
The total weight of n almonds at a weight of m + 3 mg each
$$(5^{27})(575)$$
$$(5^{28})(115)$$
The probability that both rolls are even
The probability that neither roll is a multiple of 3
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