2
2 significant figures.
It would appear to have 2 significant figures, but if there is a decimal place after the 0 (so, 150.) then it is three.
It has 3 significant figures.
150 can go into its multiples an infinite number of times.
100 has one, 150 has 2, 250 has 2.
The number 151.208, when expressed to two significant figures, is 150. This is because the first two significant figures are '1' and '5', and rounding the next digit (which is '1') leads to a decrease in the last significant figure. Therefore, the rounded value is 150.
There are 4 significant figures in this number.
There are 3 significant figures in this number.
There are 4 significant figures in this number.
There are 2 significant figures in this number.
There are 3 significant figures in this number.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.