Solution
Expression : $$\sqrt{1-(\frac{x}{529}})=(\frac{16}{23})$$
=> $$\sqrt{\frac{529-x}{529}}=\frac{16}{23}$$
=> $$\frac{529-x}{529}=(\frac{16}{23})^2$$
=> $$\frac{529-x}{529}=\frac{256}{529}$$
=> $$529-x=256$$
=> $$x=529-256=273$$
=> Ans - (C)
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