3 of them.
All three figures are significant in 235
3 of them.
Three - all nonzero numbers are significant.
All three of the digits in 235 are significant.
To determine the number of significant figures in a number like 235, you need to consider that all non-zero digits are significant. Therefore, 2, 3, and 5 are all significant figures. Additionally, trailing zeros after a decimal point are also considered significant. In this case, since there is no decimal point present, the trailing zero in 235 is not considered significant. Hence, the number 235 has three significant figures.
Three of them.
37.753 rounded to one significant figure becomes 40
6276 as a significant figure would be 4 significant figures.
1000 is written with one significant figure, with only the 1 being a significant figure.
The significant figure 2.00 has to do with the certainty of a measurement.
It has 1 significant figure.
The first significant figure of 0.000169 is the 1 and it has 3 significant figures.