Arithmetic

If 0 < a < b < c, which of the following statements must be true?

From the consecutive integers -10 to 10 inclusive, 20 integers are randomly chosen with repetitions allowed. What is the least possible value of the product of the 20 integers?

The table above is a 3 by 3 grid of 9 numbers, 5 of which are given. The 4 numbers that are not given are denoted by A, B, C, and D. The product of the numbers in each row and in each column is the same for all rows and columns. What is the value of the product ABCD ?

The sum of all the integers k such that −26 < k < 24 is

The graph shows the number of computers assembled during each of 6 consecutive days. From what day to the next day was the percent change in the number of computers assembled the greatest in magnitude ?

­A certain method for calculating pediatric drug dosages states that if d is the adult dosage, in milligrams, and y is the child’s age, in years, then the child’s dosage, in milligrams, is d × (y + 1 24) . If the adult dosage for a particular drug is 800 milligrams, what is an 8-year-old child’s dosage, in milligrams, according to this method?

Of the following, which is the closest to 60.2 1.03 * 4.86 ?

M is the sum of the reciprocals of the consecutive integers from 201 to 300, inclusive. Which of the following is true?

For any positive integer n, the sum of the first n positive integers equals n(n+1)/2. What is the sum of all the even integers between 99 and 301?

If [x] is the greatest integer less than or equal to x, what is the value of [-1.6] + [3.4] + [2.7]?

Which of the following fractions is closest to 1 2 1 2 ?

The value of 7 8 + 1 9 1 2 is closest to which of the following?

Which of the following is greatest?

(1/2) − 3 (1/4) − 2 (1/16) − 1 = (1/2) − 3 (1/4) − 2 (1/16) − 1 =

If the average (arithmetic mean) of the four numbers 3, 15, 32, and (N + 1) is 18, then N =

The table shows the amount budgeted and the amount spent for each of three accounts in a certain company.For which of these accounts did the amount spent differ from the amount budgeted by more than 6 percent of the amount budgeted ?

A certain restaurant that regularly advertises through the mail has 1,040 cover letters and 3,000 coupons in stock. In its next mailing, each envelope will contain 1 cover letter and 2 coupons. If all of the cover letters in stock are used, how many coupons will remain in stock after this mailing?

If k is an integer and (.0025)(.025)(.00025)10^k is an integer, what is the least possible value of K?

One inch represents 20 miles on Map K and one inch represents 30 miles on Map L. An area of 3 square inches represents how many more square miles on Map L than on Map K ?

The table shows a summary of the ticket sales from four performances of a certain play. What is the difference between the maximum and the minimum ticket-sale revenue from a single performance?