Evaluate the sum.
-$$\sum _ { \mathrm { i } = 1 } ^ { 4000 } \mathrm { i }$$
A) $8,002,000$
B) $8,006,001$
C) $7,998,000$
D) $8,004,000.5$

Name: Evaluate the sum. -\[\sum _ { \mathrm { i } = 1 } ^ { 4000 } \mathrm { i }\] A) $8,002,000$ B) $8,006,001$ C) $7,998,000$ D) $8,004,000.5$
Brand: Quizplus
Rating: 4.8 (39 reviews)

Question

Quizplus · Accepted Answer

The sum of the first $n$ natural numbers is given by the formula $\frac{n(n + 1)}{2}$. Here, $n = 4000$, so the sum is $\frac{4000(4000 + 1)}{2} = \frac{4000 \times 4001}{2} = 8,002,000$.

Evaluate the Sum ∑i=14000i\sum _ { \mathrm { i } = 1 } ^ { 4000 } \mathrm { i }i=1∑4000​i

Evaluate the Sum $\sum _ { \mathrm { i } = 1 } ^ { 4000 } \mathrm { i }$