I answered "C" to the following question since
a^b=1 could be that b is 0 and a is any number but with the added info that b is not zero there is the possibility of a^1=1 which would mean a=1. Does this logic make sense?
Here is the question:
a^b=c
If a, b and c are integers, what is the value of a?
(1) c=1
(2) b≠0
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.
Did the Economist GMAT make an error?
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When the statements are combined, it's possible that a=1 and b=2 or that a=-1 and b=2.jbotero08 wrote: a^b=c
If a, b and c are integers, what is the value of a?
(1) c=1
(2) b≠0
Since a can be different values, the two statements combined are INSUFFICIENT.
The correct answer is E.
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