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Problems on sequence Part II (for bacali and others)

Expert replies
Source: — Problem Solving |

austin wrote:S=1/33+1/34+1/34+...+1/64, S should lie between

1/4<S<1/2
1/2<S<1
1/8<S<1/2
1/8<S<1/4
3/4<S<1
Let's look at extremes:

if every term in the set were 1/33, then the sum would be 32*(1/33) = 32/33

if every term in the set were 1/64, then the sum would be 32*(1/64) = 32/64 = 1/2

Therefore, we know that the sum must lie between 1/2 and 1.
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