MathDB
Logarithm

Source:

March 25, 2006
logarithms

Problem Statement

If log⁡MN=log⁡NM\log_MN=\log_NM, M≠NM\ne N, MN>0MN>0, M≠1M\ne 1, N≠1N\ne 1, then MNMN equals: (A) 12(B) 1(C) 2(D) 10(E) a number greater than 2 and less than 10\text{(A)} \ \frac12 \qquad \text{(B)} \ 1 \qquad \text{(C)} \ 2 \qquad \text{(D)} \ 10 \qquad \text{(E)} \ \text{a number greater than 2 and less than 10}
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