2008-II-17

Ans: C
$\begin{array}{cl}
& 0.049~876~5 \\
= & 0.05 \text{(corr. to 2 d. p.)} \\
& 0.049~876~5 \\
= & 0.049~9 \text{(corr. to 3 sig. fig.)} \\
& 0.049~876~5 \\
= & 0.049~9 \text{(corr. to 4 d. p.)} \\
& 0.049~876~5 \\
= & 0.049~877 \text{(corr. to 5 sig. fig.)}
\end{array}$