Question

Anyone tell me the Significant Figure of 420m..? Explain...it briefly​

Answer 1

Answer:

Actually both the 4 and the 2 are significant figures in the number 420. And the 0 can be considered significant in certain mathematical situations. Significant figures are the ones that indicate the precision of a number, so if 420 is in a context of being precise (like 420 rather than 419 or 421) then the 0 can be considered significant. If the 420 is in the context where you might be rounding answers to the nearest 10, then the 0 is not significant. There is mathematical notation that is used to indicate where the last significant figure in a number is (usually it is a bar over the last figure). So if 20,000 is precise to the hundreds then it would be written with a bar over the third zero from the right.

Answer 2

Answer:

3

Explanation:

As all non decimal numbers are significant