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Surds and Indices practice question for Railways, SSC. Review the correct answer and explanation, then continue with related practice below.

Question language / प्रश्न भाषा

If x + 1 x = 6, find x⁵ + 1 x⁵.

यदि x + 1 x = 6 है, तो x⁵ + 1 x⁵ ज्ञात कीजिए।

Answer and explanation are free to read — no sign-in required.उत्तर और व्याख्या पढ़ने के लिए साइन-इन आवश्यक नहीं है।

A

6726 / 6726

✓

B

6730 / 6730

C

6732 / 6732

D

6740 / 6740

Correct Answerसही उत्तर

A. 6726 / 6726

Explanationव्याख्या

Using Sₙ=6Sₙ₋₁-Sₙ₋₂ with S₀=2 and S₁=6 gives S₂=34, S₃=198, S₄=1154 and S₅=6726.

पुनरावृत्ति सूत्र से मान 6726 है।

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