Which of the following sets has the same standard deviation as the set that contains k, k + 2, and 2k? A. k-2, -2, 0 B. 2k, 2k + 4, 4k C. 1, 2, k D. k, k-1, k-2 E. k/2, k, 2 [spoiler]A.[/spoiler]
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GMAT Question of the Day – Data Sufficiency – Overlapping Sets Of the leopards at a certain zoo, 20% are both spotted and mature. If all the leopards at the zoo are either spotted or not spotted, or mature or immature, is the ratio of the number of immature leopards who are spotted to the
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GMAT Question of the Day – Problem Solving – Percent At the beginning of the year in town X, 30% of the population had liberal values. At the end of the year the total population had grown by 12% and the proportion of the population with liberal values had decreased by 5%. From the beginning
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GMAT Question of the Day – Problem Solving – Exponents 3^a + 3^b + 3^c + 3^d = 2 If a, b, c, and d are integers then what is the value of a + b + c + d? A. -3 B. -2 C. -1 D. 1 E. 2 [spoiler]A.[/spoiler] GMAT Question of the
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GMAT Question of the Day – Problem Solving – Geometry If s is between 0 and 9, how many different equilateral triangles with side s can be formed that have an area which is an integer value? A. 3 B. 4 C. 5 D. 6 E. 7 [spoiler]E.[/spoiler] GMAT Question of the Day Solution This
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