Civil Services HPPSC (Himachal Pradesh) HPAS Mock Test 2021 Quantitative Aptitude Simplification Surds and Indices

3^{x + 3} + 3^{x + 2} + 3^{x - 1} = 981 হলে x-এর মান কত?

1

3

2

9

3

5

4

2

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