Answer: The power of 10 in the given value is 5.
Step-by-step explanation:
Scientific notation is defined as the representation in which a number is expressed in the decimal form. That means always written in the power of 10 form. The decimal place is put after 1 digit.
We are given a numerical value of 157,821
Converting this into scientific notation, we get:

Hence, the power of 10 in the given numerical value is 5.