If n and k are positive integers, is n/k an even integer? (1) n is divisible by 8. (2) k is divisible by 4.
Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy? (1) She bought $4.40 worth of stamps. (2) She bought an equal number of $0.15 stamps and $0.29 stamps.
A citrus fruit grower receives $15 for each crate of oranges shipped and $18 for each crate of grapefruit shipped. How many crates of oranges did the grower ship last week? (1) Last week the number of crates of oranges that the grower shipped was 20 more than twice the number of crates ...
Is │x - y│>│x - z│? (1) │y│>│z│ (2) x < 0
Is x>0? (1) x+3>2 (2) x+3
Is the integer P odd? (1) The sum of P, P + 4, and P + 11 is even. (2) The sum of P – 3, P, and P + 11 is odd.
If positive integer x is a multiple of 6 and positive integer y is a multiple of 14, is xy a multiple of 105 ? (1) x is a multiple of 9. (2) y is a multiple of 25.
A school administrator will assign each student in a group of n students to one of m classrooms. If 3 < m < 13 < n, is it possible to assign each of the n students to one of the m classrooms so that each classroom has the same number of students assigned to it?(1) It is possible to assign ...
If n is a positive integer, what is the tens digit of n ? (1) The hundreds digit of 10n is 6. (2) The tens digit of n + 1 is 7.
In a certain office, 50 percent of the employees are college graduates and 60 percent of the employees are over 40 years old. If 30 percent of those over 40 have master’s degrees, how many of the employees over 40 have master’s degrees (1) Exactly 100 of the employees are college gr...
Is the integer x divisible by 6 ? (1) x + 3 is divisible by 3. (2) x + 3 is an odd nu...
Ann bought five different kinds of fruit: apples, oranges, pears, mangoes, and bananas. If the number of apples that Ann bought was twice the number of oranges and if the number of pears that Ann boug...
Introduced by Italian merchants resident in London during the sixteenth century, in England life insurance remained unti...
Neuroscientists, having amassed a wealth of knowledge over the past twenty years about the brain and its developmen...
While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a...