Question

$\sqrt{7 } + 2 \sqrt{3} \div 2 \sqrt{7} - \sqrt{5} = 8 + \sqrt{p } + \sqrt{q} + \sqrt{r} \div 23(where \: p \: q \: r \: integer \: and \: p < q < r) \: the \: value \: of \: (q + r - p + 8)is \: equal \: to$
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Answer 1

Answer:

The epiglottis guards the opening of _________.