4 - significant figures are counted from the right of the first 0 in a decimal, or from the beginning of the number otherwise. All the following digits are counted. So here the significant figures start at the beginning of the number and are 2, 2, 1 and 5, but for example in the number 0.0007805, the significant figures are 7, 8, 0 and 5.
3 significant figures.
There are 2 significant figures in this number.
4 significant figures
0.01223 contains 4 significant figures1.01 contains 3 significant figures
4.0600 contains 5 significant figures.
5 of them.
4
Four significant figures. Review you rules for significant figures. Some chemistry teachers, especially at the college level, are very concerned with significant figures.
The product is 67.30879 which contains 7 significant figures
2 of them.
2 of them.
1 of them.