Suppose $\log _a b+\log _b a=c$. The smallest possible integer value of $c$ for all $a, b>1$ is
Suppose $\log _a b+\log _b a=c$. The smallest possible integer value of $c$ for all $a, b>1$ is
- [KVPY 2011]
- A
$4$
- B
$3$
- C
$2$
- D
$1$
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