We are asked for the number of significant figures in the answer to the problem.

The number of significant figures depends on the operation we use:

1. **addition or subtraction** - the ** least** number of

2. **multiplication or division**** **- the ** least** number of

We operate the ones in the brackets first in this order : () → [] → {}

To how many significant figures should each answer be rounded?

After rounding, the answer to equation B should have

a. 1 significant figure

b. 4 significant figure

c. 3 significant figure

d. 2 significant figure

e. 5 significant figure

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