GRE-Math-Questions-to-Know-by-Test-Day-2nd-Edition_pag129

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120 › McGraw Hill 500 GRE® Math Questions
 392. Shail and Jackwyn work at a restaurant that is open seven days a week. 
Shail’s schedule is to work three days in a row, and then have one day off. 
Jackwyn’s schedule is to work five days in a row, and then have two days 
off. In September, neither Shail nor Jackwyn worked on September 1, but 
both worked on September 2. What other date in September were both 
Shail and Jackwyn off on the same day? Indicate all such dates.
 (A) September 13
 (B) September 17
 (C) September 21
 (D) September 29
 393. Which of the following numbers is rational? Indicate all such numbers.
 (A) − 36 
 (B) − 120 
 (C) − 4
9
 
 (D) 1
2
 
 (E) 0.49 
 (F) 40 
 (G) 400 
 394. If x is a positive integer, which of the following digits could be the units 
digit of 27x? Indicate all such digits.
 (A) 1
 (B) 2
 (C) 3
 (D) 7
 (E) 9
 395. Which of the following expressions is equivalent to 3 18? Indicate all such 
expressions.
 (A) 27 2 
 (B) 54 
 (C) 162 
 (D) 9 2 
 (E) 3 6 
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