11 has two significant figures. A significant figure is any non-zero digit or any embedded or trailing zero. Leading zeros are not significant.
But according to the rules of significant figures, the least number of significant figures in any number of the problem determines the number of significant figures in the answer which, in this case, would be 11.
11 crore = 11,00,00,000
The product is 11 mm
It is 11:48 am
11 200 000
11 significant figures.
Two - all nonzero numbers are significant.
It has 11 significant digits
Two.
But according to the rules of significant figures, the least number of significant figures in any number of the problem determines the number of significant figures in the answer which, in this case, would be 11.
12 sig-figs. Without the final zero it only has 11.
0.0013
0.0116
There are 1609.344 metres in one mile. Therefore, rounded to three significant figures, 11 metres is equal to 11/1609.344 = 0.00684 miles.
One. In scientific notation 0.00000000006 = 6 x 10-11 which has 1 digit in the mantissa (the bit before the x 10-11) showing the number has only 1 significant figure. The first significant figure is the first non-zero digit; then count the number of digits from there onwards until just zeros remain and stop counting then. Trailing zeros are not normally counted as significant, but trailing zeros after a decimal point (which would not normally be written) could indicate rounding to significant figures and be counted, eg 3.5897 to 4 sig fig is 3.590
If you take pi as 3.141592654, then the answer is 2.145029397 to 11 significant figures.
For multiplication and division, you keep the number of significant figures (sig figs) that were in the number with the lesser number of figures. For example, 12345 divided by 555 on a calculator gives 22.243243... but you would represent this as 22.2 because 555 has only 3 sig figs. That said, sig figs are a bit silly in that 99 is much more significant than 10, though both have two digits. Going from 99 to 100 is a 1% change, but going from 10 to 11 is a 10% change. When doing calculations, you should in general NOT round intermediate answers to sig figs, but only the final answer. It's usually best if possible to do the calculation symbolically (such as X is the number instead of 12345) and solve for your final answer, and THEN do all the calculations at once on a calculator, rather than writing down lots of intermediate values (and rounding many out of laziness.) Alternatively, do the calculations in a spreadsheet where you can show all intermediate numbers but preserve them to their full significance, and be able to check your work, unlike with most calculators.