Data Sufficiency

Is m ≠ n ? (1) m + n < 0 (2) mn < 0

If x/2 = 3/y, is x less than y? (1) y >= 3 (2) y <= 4

What is the value of 1/x + 1/y ? (1) x + y = 14 (2) xy = 24

Is the triangle above equilateral? (1) x = y (2) z = 60

Is k greater than t? (1) kt = 24 (2) k^2 > t^2

What is the number of members of Club X who are at least 35 years of age? (1) Exactly 3/4 of the members of club X are under 35 years of age. (2) The 64 women in Club X constitute 40 percent of the club's membership.

If x, y and z are nonzero numbers is xz = 12 ? (1) x^2*y*z =12xy (2) z/4 =3/x

A certain salesperson's weekly salary is equal to a fixed base salary plus a commission that is directly proportional to the number of items sold during the week.If 50 items are sold this week , what will be the salesperson's salary for this week. (1) Last week 45 items were sold. (2) Last week's salary was $405 (1) Last week 45 items were sold. (2) Last week's salary was $405

Is ax = 3 - bx? (1) x(a + b) = 3 (2) a = b = 1.5 and x = 1

What is the value of 36,500*1.05^n? (1) n^2 -5n+6 = 0 (2) n − 2 ≠ 0 n − 2 ≠ 0

If Ms. Smith's income was 20 percent more for 1991 than it was for 1990. how much was her income for 1991? (1) Ms. Smith's income for the first 6 months of 1990 was $17,500andherincomeforthelast6monthsof1990was$20,000. (2) Ms. Smith's income for 1991 was $7,500 greater than her income for 1990.

If n is a positive integer, is 150/n an integer? (1) n < 7 (2) n is a prime number

Is the integer k a prime number? (1) 2k = 6 (2) 1 < k < 6

For a certain set of n numbers, where n > 1, is the average (arithmetic mean) equal to the median? (1) If the n numbers in the set are listed in increasing order, then the difference between any pair of successive numbers in the set is 2. (2) The range of the n numbers in the set is 2(n- 1).

How many more men than women are in the room? (1) There is a total of 20 women and men in the room. (2) The number of men in the room equals the square of the number of women in the room.

If S is a set of four numbers w, x, y, and z, is the range of the numbers in S greater than 2 ? (1) w - z > 2 (2) z is the least number in S.

Martha bought several pencils. If each pencil was either a 23 cent pencil or a 21 pencil, how many 23 cent pencils did martha buy? (1) Martha bought a total of 6 pencils (2) The total value of the pencils Martha bought was 130 cents.

A bookstore that sells used books sells each of its paperback books for a certain price and each of its hardcover books for a certain price. If Joe, Maria, and Paul bought books in this store, how much did Maria pay for 1 paperback book and 1 hardcover book? (1) Joe bought 2 paperback books and 3 hardcover books for $12.50. (2) Paul bought 4 paperback books and 6 hardcover books for $25.00.

What was the ratio of the number of cars to the number of trucks produced by Company X last year? (1) Last year, if the number of cars produced by Company X had been 8 percent greater, the number of cars produced would have been 150 percent of the number of trucks produced by Company X. (2) Last year Company X produced 565,000 cars and 406,800 trucks.

Is x y < 6 x y < 6 ? (1) x < 3 x < 3 and y < 2 y < 2 (2) 1 2 < x < 2 3 1 2 < x < 2 3 and y 2 < 64 y 2 < 64