A
B
C
D
E
A
B
C
D
E
Statement 1 does not state anything about b, and Statement 2 does not state anything about a, so the answer can be either C or E.BTGmoderatorDC wrote:If a, b, and c are positive integers, what is the remainder after b - a is divided by 3?
(1) a = c^3
(2) b = (c + 1)^3
OA C
Source: Manhattan Prep
A
B
C
D
E
Another option is to test values. As Jay said, we need information about both b and a, so neither statement will be sufficient on its own. When we combine the statements, we can test values:BTGmoderatorDC wrote:If a, b, and c are positive integers, what is the remainder after b - a is divided by 3?
(1) a = c^3
(2) b = (c + 1)^3
OA C
Source: Manhattan Prep
A
B
C
D
E
Clearly, neither statement is sufficient on its own.BTGmoderatorDC wrote:If a, b, and c are positive integers, what is the remainder after b - a is divided by 3?
(1) a = c^3
(2) b = (c + 1)^3
