State the rules for finding the significant figures in the multiplication and division of two numbers, with example.

Explanation

Multiplication and Division : The final result should retain as many significant figures as there are in the original number with smallest number of significant figures. In multiplication or division.
Eg:
(i) `1.21xx36.72=44.4312=44.4`
Here the least number of significant digits in the measured values is three. Hence the result when rounded off of three significant digits is 44.4
(ii) `36.72 div 1.2 =30.6 =31`
Here the least number of significant digits in the measured values is two. Hence the result when rounded off to significant digit becomes 31.