IIT-JEE 1990Question 1
The number $\log_{2}7$ is
Sets, Relations and Function
Solution
If $\log_27=\frac pq$ then $2^p=7^q$, impossible (even vs odd). So $\log_27$ is irrational.Sets, Relations and Function - JEE Mathematics question (IIT-JEE 1990)
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