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If 5 = 2 236 then what is the value of...

This question belongs to Arithmetic Ability Surds And Indices
Surds and Indices
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If √5 = 2.236, then what is the value of $$\frac{{\sqrt 5 }}{2} + \frac{5}{{3\sqrt 5 }} - \sqrt {45} ?$$

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Correct Answer: Option B
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