Answer :
Final answer:
The power of 10 in scientific notation of 157821 is 5.
Explanation:
The question asks for the power of 10 when 157821 is written in scientific notation.
Scientific notation is a way of simplifying large or small numbers by expressing them as a number between 1 and 10, multiplied by a power of 10.
In this case, you begin by placing a decimal after the first number of 157821 to get 1.57821.
Then you have to count how many places you've moved the decimal, which is 5 in this case.
So, 157821 is written as 1.57821 × 10⁵ in scientific notation.
Hence, the power of 10 in scientific notation of 157821 is 5.
Learn more about Scientific Notation here:
https://brainly.com/question/2005529
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