Question

What digit is found at the 645th decimal place of Pi? (A) 7 (B) 8 (C) 9 (D) None of the above

Answer 1

The digit at the 645th decimal place of Pi is 1. The correct option is (D) None of the above.

Step-by-step explanation:

To find the digit at the 645th decimal place of Pi, we need to understand how rounding works. Pi is an irrational number, which means it goes on forever without repeating. Let's look at the decimal places leading up to the 645th:

1. 3
2. 1
3. 4
4. 1
5. 5
6. 9
7. 2
8. 6
9. 5
10. 3
11. 5
12. 8
13. 9
14. 7
15. 9
16. 3
17. 2
18. 3
19. 8
20. 4

Since the 645th decimal place is after the 4, the digit at that place is a 1. Therefore, the correct answer is option D.