GMAT Question of the Day – Problem Solving – Puzzle Which of the following is the greatest prime factor of 74^2 – 47^2? A. 2 B. 3 C. 5 D. 11 E. 19 [spoiler]D.[/spoiler] GMAT Question of the Day Solution: This is an exponent puzzle. The arithmetic would be possible but time consuming. It is rare […]
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GMAT Question of the Day – Data Sufficiency – Exponents If m and z are positive integers, is the ? (1) z > 7m (2) z – m > 0 [spoiler]A.[/spoiler] GMAT Question of the Day Solution: Data Sufficiency is all about organization so take your time organizing the given information. No rushing to the
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GMAT Question of the Day – Data Sufficiency – Overlapping Sets 1 At a certain company, 1/3 of the employees are senior managers and 2/3 of the employees are full-time. If 1/5 of the full time workers contribute to the company retirement plan, how many of the full-time employees contribute to the company retirement plan?
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GMAT Question of the Day – Data Sufficiency – Number Properties If a, b, and c are not equal to zero, is abc > 0? (1) ab + ac > 1 (2) ac + cb > 1 [spoiler]E.[/spoiler] Here’s a problem solving question also dealing with testing signs: How many of the integers that satisfy
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GMAT Question of the Day – Problem Solving – Exponents If m and z are integers and if , what is the value of m + z? A. 8 B. 14 C. 20 D. 24 E. 26 [spoiler]E.[/spoiler]
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