Note: The only significant figures in a logarithm are those after the
decimal piont. The integer part just gives the power of 10. In the following there are 3 significant figures in (a), (b), (c) and (e); (d) has 2 sig. fig. This must be preserved in the
answer.
2. Using your calculator:

(a) antilog (0.724) = 5.30

(b) antilog (1.724) = 53.0

(c) antilog (-0.689) = 0.205

(d) antilog (-6.89) = 1.3X10^{-7}

(e) antilog (-0.0100) = 0.977

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