Question 406254
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Hi
Question relates to a Arithmetic Sequence {30,32,34...} where d = 2
and the terms are the enumber of seats in each row.
{{{S[n]=(n/2)(2*a[1]+ (n-1)d)}}}  |Sum of the seats in the 26 rows.
{{{S[26]=(26/2)(2*30+ (25)2)}}} = 1430 seats in the ALL 26 rows