Use the indicated formula to find the sum.
-Use $S = \frac { n ( n + 1 ) } { 2 }$ to find the sum of $1 + 2 + 3 + \ldots + 625$.
A) 195,312
B) 195,625
C) 194,376
D) 195,000

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The Answer of Use the indicated formula to find the sum.
-Use $S = \frac { n ( n + 1 ) } { 2 }$ to find the sum of $1 + 2 + 3 + \ldots + 625$.
A) 195,312
B) 195,625
C) 194,376
D) 195,000

Use the Indicated Formula to Find the Sum S=n(n+1)2S = \frac { n ( n + 1 ) } { 2 }S=2n(n+1)​

Use the Indicated Formula to Find the Sum $S = \frac { n ( n + 1 ) } { 2 }$