JAMB 1983 · UME · Q30

Correct each of the numbers 59.81789 and 0.0746829 to three significant figures and multiply them, giving your answer to three significant figures.

Worked solution (try it first)

To 3 significant figures, 59.81789 is 59.8 (the fourth figure is 1, so round down).
0.0746829 is 0.0747: the leading zeros don't count, and the fourth figure is 8, so the 6 rounds up to 7.
Multiply: $59.8 \times 0.0747 = 4.46706$ .
The fourth figure is 7, so round up: 4.47, option C.