Final Answer:
3 is found at the 21st decimal place of Pi, thus the correct option is B.
Explanation:
Pi is an irrational number, which means that its decimal values never end and never repeat in a pattern. Pi is usually represented by the Greek letter π and its value is 3.1415926535897932384626433832795. In the series of digits of Pi, 3 is the number found at the 21st decimal place.
The number 3 is the answer to the given question because Pi is an irrational number, and 3 is the 21st decimal place in the sequence of digits of Pi. Thus, the answer to the given question is 3.
Pi is most commonly approximated as 3.14. This value is only accurate up to the first two decimal places, but it is widely accepted in most calculations. The value of Pi is essential to many mathematical operations, including the calculation of the circumference and area of a circle.
Pi is also used in calculations involving trigonometry, such as calculating the sides of a triangle or the height of a building. It is also used in probability and statistics, where the value of Pi is used to calculate the probability of certain events occurring. In addition, it is used in physics to calculate the volume of a sphere or the gravitational force of two objects.
In conclusion, the answer to the given question is B) 3, which is the digit found at the 21st decimal place of Pi.