BTGModeratorVI wrote: ↑Thu Dec 03, 2020 2:54 pm
If x, y, and z are prime numbers and x < y < z, what is the value of x?
(1) xy is even.
(2) xz is even.
Answer:
D
Source: Manhattan prep
Given: x, y, and z are prime numbers and x < y < z
Target question: What is the value of x?
Statement 1: xy is even
This tells us that one of the variables must be 2
Since 2 is the smallest prime number, and since x < y < z, we can conclude that
x = 2
Since we can answer the
target question with certainty, statement 1 is SUFFICIENT
Statement 2: xz is even
This tells us that one of the variables must be 2
Since 2 is the smallest prime number, and since x < y < z, we can conclude that
x = 2
Since we can answer the
target question with certainty, statement 2 is SUFFICIENT
Answer: D
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
