taiwan-gsat 2009 Q1

taiwan-gsat · Other · gsat__math Arithmetic Sequences and Series Compute Partial Sum of an Arithmetic Sequence
1. A sequence $a_{1} + 2, \cdots, a_{k} + 2k, \cdots, a_{10} + 20$ has ten terms, and their sum is 240. Then the value of $a_{1} + \cdots + a_{k} + \cdots + a_{10}$ is
(1) 31
(2) 120
(3) 130
(4) 185
(5) 218
& 3 & \multirow{2}{*}{A} & 12 & 9 & \multirow[t]{2}{*}{F} & 24 & 5 
1. A sequence $a_{1} + 2, \cdots, a_{k} + 2k, \cdots, a_{10} + 20$ has ten terms, and their sum is 240. Then the value of $a_{1} + \cdots + a_{k} + \cdots + a_{10}$ is\\
(1) 31\\
(2) 120\\
(3) 130\\
(4) 185\\
(5) 218
Paper Questions
Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11