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CTET PAPER II 2018 · PYQ · Square Roots · medium

The value of √(91 + √(70 + √121)) is—

  1. A.9
  2. B.10✓ Correct
  3. C.11
  4. D.12

Explanation

Solving from innermost: √121 = 11. Then √(70 + 11) = √81 = 9. Finally √(91 + 9) = √100 = 10. So the answer is 10. This requires nested square root simplification.
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