Question 18
Calculate
$192\left(\frac1{20}+\frac1{30}+\frac1{42}+\cdots+\frac1{2256}\right)$.
The denominators follow $n(n+1)$ for consecutive integers $n=4,5,\ldots,47$.
Answer format: enter one whole number without units. The printed paper uses four answer-sheet digits with leading zeros when needed; ordinary numeric entry is used here.
$192\left(\frac1{20}+\frac1{30}+\frac1{42}+\cdots+\frac1{2256}\right)$.
The denominators follow $n(n+1)$ for consecutive integers $n=4,5,\ldots,47$.
Answer format: enter one whole number without units. The printed paper uses four answer-sheet digits with leading zeros when needed; ordinary numeric entry is used here.