Question

State the number of significant figures in each of the following numbers.
(i) 0.05031
(ii) 2.563 × $10^{10}$

Answer 1

"The term "significant figures" refers to the "number" of "important single digits" (From 0 to 9) in the expression coefficient in scientific notation. The "number of significant figures" in an "expression"" shows the "confidence or accuracy" with which a person states a "quantity".

The following three rules are used to determine the number of significant numbers in a number:  

· Non-zero numbers are always significant  

· Any zeros between two significant numbers are significant.

· A "final zero" or "trailing zeros" in the "decimal portion" are only important. Examples:  0.900 or 0.928000, the zeros are significant.

(i) $\quad 0.05031\quad -\quad 4\quad Significant\quad figures$

(ii) $\quad 2.563\times 10^{ 10 }\quad -\quad 4\quad Significant\quad figures$"

Answer 2

Hey mate

☺✌☺i)------ $\huge\red{4}$

☺✌☺ii)------ $\huge\red{4}$