Question

What is 2648 to two significant figures?

Answer 1

Hint: For solving this question you should know about the significant figures. In the given problem we will compare the given number with all nearly significant numbers which are completely applying on this, then that number will be the significant figure for this.

Complete step-by-step solution:
According to the question we are asked to find what is 2648 to two significant figures. So, as we know what a significant figure is, we will apply our laws of regulating significant figures. So, if we look at the laws regulating the significant figures, then:
1.Any number which is positive or negative, means which are not zero is a significant figure.
2. If any zero is there between two integers which are non-zero, then that zero will be a significant number.
3. If there are any zeros before a decimal point, then there is no meaning for that because there is no significance of every zero before a decimal point.
4. The zeros which are trailing zeros are significant after the decimal point. It means that the trailing zeros which are available after the decimal point will be significant after that decimal point.
So, according to our question we may write the given number as 2 significant numbers based on the rules which are mentioned above.
Two significant figures of 2648 is 2600, here the zeros are not significant.
So, the answer for this is 2600.

Note: While solving this type of question if it is asked to count the significant numbers or it can be asked to find the significant number, then always calculate a significant number under the rules, because if any one rule is not satisfied, your answer will be wrong.