Three. The 4 and 5 are significant because they are non-zero numbers. The zero between the 4 and 5 is significant because it is between other significant figures. The trailing zeroes are not significant because they do not follow a decimal point.
3 significant figures.
3 of them.
Three, four or five. Integers ending in 0 are ambiguous cases.
40500
40500
1215 3%*40500=0.03*40500=1215 Win+R-->calc-->Enter-->40500*0.03-->Enter==>1215
It is 40500 (of whatever) per hour.
Four of the zeros are significant... the two zeros after the digit 5 0 are simply 'place fillers'.
Three of them
231.57 has five significant figures/numbers. All the numbers in 231.57 are significant.
3 there is 4, 5, and the 0 in between. The two trailing zeros are not measured as significant figures unless there is a decimal point or further significant figures (40505 has 5 sig figs, 40500.0 has 6 4.05x10^3 has 3 etc.)
The figure 18.03 has a total of four significant numbers