← CAT 2017 Slot 1 QA

CAT 2017 Slot 1 QA · Question 24

If 9^{2x – 1} – 81^x-1 = 1944, then x is

A.
3
B.
$\frac{9}{4}$
C.
$\frac{4}{9}$
D.
$\frac{1}{3}$

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