Get detailed explanations to advanced GMAT questions.
If m and n are integers and x > 0, what is the value of x^m+x^n?
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^m=81. No info about n. Not sufficient.
Statement II is insufficient: 1+x^(n−m)=10 –> x^(n−m)=9 –> (x^n)/(x^m)=9 –> x^n=9x^m –> x^m+x^n=10x^m. Not sufficient.
Together I and II, x^m+x^n=10*x^m=10∗81. Sufficient.
- A car traveling at a certain constant speed takes 2 seconds longer to travel 1 kilometer than it would…
- If 2s > 8 and 3t < 9, which of the following could be the value of s-t?
- A farmer spent $35 on feed for chickens and goats. He spent 40% money on chicken feed, which he…
- The cost of a certain phone call was $0.75 for the first 3 minutes and $0.20 for each additional minute…
- What is the value of expression x(x-2)^3 when x = -1?