lived around 260CE, obtained the approximation
62500
8919
62500
4407
3
3
<
<
π
. Use the approximate
value
14159
.
3
≈
π
to estimate the percentage errors in these approximations.
[Today, using iterative methods that converge very rapidly, and powerful computers,
π
has been
calculated to billions of decimal places.]
r
r
r
r
r
r
r
r
10.
Let
N
be the smallest positive integer whose digits add up to 2012. What is the first
digit of
1
+
N
?
A
2
B
3
C
4
D
5
E
6

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