Q9 if x and z are integers is at least one of them

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Q9: If x and z are integers, is at least one of them even? (1) x + z is odd. (2) x - z is odd. A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient. Answer: ------------------------------------------------------------------------------------------------------------ 3
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Q10: A certain quantity is measured on two different scales, the R -scale and the S -scale, that are related linearly. Measurements on the R -scale of 6 and 24 correspond to measurements on the S -scale of 30 and 60, respectively. What measurement on the R - scale corresponds to a measurement of 100 on the S -scale? ------------------------------------------------------------------------------------------------------------ Q11: The total cost of an office dinner was shared equally by k of the n employees who attended the dinner. What was the total cost of the dinner? (1) Each of the k employees who shared the cost of the dinner paid $19. (2)If the total cost of the dinner had been shared equally by k + 1 of the n employees who attended the dinner, each of the k + 1 employees would have paid $18. ------------------------------------------------------------------------------------------------------------ Q12: A certain liquid leaks out of a container at the rate of k liters for every x hours. If the liquid costs $6 per liter, what is the cost, in dollars, of the amount of the liquid that will leak out in y hours? ky 6 x 6 k 6 ky 6 xy 6 ------------------------------------------------------------------------------------------------------------ 4
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Q13: Which of the following is equal to 3 6 6 12 2 2 2 2 - - ? A. 3 6 2 2 + B. 3 6 2 2 - C. 9 2 D. 3 2 E. 2 Answer: ------------------------------------------------------------------------------------------------------------ Q14: A company has assigned a distinct 3-digit code number to each of its 330 employees. Each code number was formed from the digits 2, 3, 4, 5, 6, 7, 8, 9 and no digit appears more than once in any one code number. How many unassigned code numbers are there? ------------------------------------------------------------------------------------------------------------ Q15: If s 4 v 3 x 7 < 0, is svx < 0? (1) v < 0 (2) x > 0 ------------------------------------------------------------------------------------------------------------
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