4 of them.
1408 has four significant figures. Significant figures are the digits in a number that carry meaning contributing to its precision. In this case, all four digits (1, 4, 0, and 8) are considered significant. Zeros between non-zero digits (like the zero in 1408) are also significant.
3 significant figures.
There are 4 significant figures in this number.
There are 3 significant figures in this number.
There are 2 significant figures in this number.
4 significant figures.
1408 has four significant figures. Significant figures are the digits in a number that carry meaning contributing to its precision. In this case, all four digits (1, 4, 0, and 8) are considered significant. Zeros between non-zero digits (like the zero in 1408) are also significant.
Three significant figures are in this number.
3 significant figures.
There are 4 significant figures in this number.
There are 4 significant figures in this number.
There are 3 significant figures in this number.
There are 2 significant figures in this number.
There are 3 significant figures in this number.
There are 3 significant figures in this number.
There are six significant figures in this number (i.e. all the figures here are significant).
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.