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

यदि 3^{x + 3} + 3^{x + 2} + 3^{x - 1} = 981 तो x का मान ज्ञात कीजिए।

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3

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9

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5

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2

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