3 of them.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
4 significant figures.
The number 805 has three significant figures.
There are 4 significant figures in this number.
There are 3 significant figures in this number.
10 significant figures.
80.07749999999999
3
4
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
4 significant figures.
Three significant figures are in this number.
The number 805 has three significant figures.
There are 4 significant figures in this number.
There are 2 significant figures in this number.
There are 4 significant figures in this number.
There are 3 significant figures in this number.