### Sample significant figure problems:

### c) 5600

### Answer

### To determine the number of significant figures in this number
we must apply rule #1 and #5...

### 1. All nonzero digits are significant.

### 5. Zeros at the end of a number without
a decimal point are ambiguous. We will assume they are NOT
significant.

### Therefore this number has 2 significant figures (sig figs).