Simplify:

\(6 \div 6^{-2}+\sqrt{36}-\sqrt{144}=?\)

This question was previously asked in
RPF SI (2018) Official Paper (Held On: 24 Dec, 2018 Shift 1)
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  1. 240
  2. 230
  3. 220
  4. 210

Answer (Detailed Solution Below)

Option 4 : 210
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Detailed Solution

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Simplify:

\(6 \div 6^{-2} + \sqrt{36} - \sqrt{144}\)

Formula used:

a ÷ a−b = ab

√a = a1/2

Calculations:

6 ÷ 6−2 = 6 × 62

⇒ 6 × 36 = 216

√36 = 6

√144 = 12

⇒ 216 + 6 - 12

⇒ 210

∴ The answer is 210.

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