All 3 of them.
There are six significant figures in this number (i.e. all the figures here are significant).
1. All non-zero digits are significant. For example, 295 has three significant figures. 2. Leading zeroes in front of a decimal are not significant. For example 0.295 has three significant figures. 3. Zeroes between other significant figures are significant. For example 2095 has four significant figures. 4. Trailing zeroes after a decimal are significant. For example 295.0 has four significant figures. And 2950 has three significant figures because the trailing zero does not occur after a decimal.
There are 6 significant figures in 31.6901. If a number contains all non - zero digits before & after decimal then all digits are significant .
The accuracy of the answer is limited to the LEAST significant figures of the input. So if two measured quantities are multiplied or divided, one of which is accurate to only two significant figures, and other to six significant figures, the answer is only accurate to two significant figures. HOWEVER: use all the figures you have for the calculation, and then round your answer to two significant figures. Also, however, remember that if you are multiplying by an actual exact number, as in doubling, the significant figures of that 2 is unlimited, so the answer is only limited by the significant figures of the number you are doubling.
All 7 are significant figures.
All six are significant figures.
All 3 of them.
All 5 of them are significant figures.
All 8 of them are significant figures
All three of them are significant figures
all the zeros are significant. there are four significant figures.
There are six significant figures in this number (i.e. all the figures here are significant).
There are six significant figures in the number 129042.
There are five significant figures in the given value. It is according to the rule of significant figures which say that zeros right to the decimal point are significant and all non zero digits are significant So , all the digits in the given value are significant figures i.e 5 significant figures.
Five; all the figures are significant.
690 has two significant figures. The zero at the end is not significant for the purposes of determining the number of significant figures.