Let a, b, c be real numbers, each greater than 1 , such that \frac{2}{3} \log _{b} a+\frac{3}{5} \log _{c} b+\frac{5}{2} \log _{a} c=3. If the value of b is 9 , then the value of ' a ' must be

WBJEE 2021 Math Solved Paper

CATEGORY - I (Q:1 to Q50)

Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.

Question : 9 of 75

Marks: +1, -0

Let a,b,c be real numbers, each greater than 1 , such that

logba+

logcb+

logac=3.
If the value of b is 9 , then the value of ' a ' must be

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