Get detailed explanations to advanced GMAT questions.
Is x > y?
I. x = 4y^2
II. x > 1
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.
EACH statement ALONE is sufficient to answer the question asked.
Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
Option C is the correct answer.
Statement I is insufficient: x = 4y^2. If x=y=0 then the answer is NO but if x=4 and y=1 then the answer is YES. Not sufficient.
Statement II is insufficient: x > 1. Not sufficient.
Together I and II, x=4y^2 –> y=√x/2 (or y=−√x/2=negative). Now, since x>1 then x>√x, so x>(√x/2=y). Sufficient.
- Which of the following is an integer?
- Of the 500 business people surveyed, 78 percent said that they use their laptop computers at home…
- If both x and y are nonzero numbers, what is the value of y/x?
- A train travelled from Station A to Station B at an average speed of 80 kilometres per hour and then…
- A certain farmer pays $30 per acre per month to rent farmland. How much does the farmer pay per month to rent a rectangular plot of farmland that is 360 feet by 605 feet? (43560 square feet = 1 acre)