Test 6
1.
\(a_n\text{ is arithmetic}\)
\(a_7+a_{10}=29\)
\(a_6+a_{12}=32\)
\(a_8-a_7=?\)
A) \(7\)B) \(6\)C) \(5\)D) \(4\)E) \(3\)
2.
\(a_n\text{ is arithmetic}\)
\(a_3=10\)
\(a_9=34\)
\(a_n=?\)
A) \(n+6\)B) \(4n+2\)C) \(3n+2\)D) \(4n-4\)E) \(4n-2\)
3.
\(a_n\text{ is arithmetic}\)
\(a_4+a_{20}=60\)
\(a_{12}=?\)
A) \(20\)B) \(30\)C) \(40\)D) \(50\)E) \(60\)
4.
\(a_n\text{ is arithmetic}\)
\(a_1+a_{15}=20\)
\(a_4+a_{12}=?\)
A) \(10\)B) \(15\)C) \(20\)D) \(25\)E) \(30\)
5.
\(a_n\text{ is arithmetic}\)
\(a_5=8\)
\(a_1+a_3+a_7+a_9=?\)
A) \(4\)B) \(8\)C) \(16\)D) \(24\)E) \(32\)
6.
\(a_n\text{ is arithmetic}\)
\(a_3+a_4+a_{10}+a_{11}=20\)
\(a_7=?\)
A) \(5\)B) \(8\)C) \(10\)D) \(12\)E) \(20\)
7.
\(a_n\text{ is arithmetic}\)
\(a_5=10\)
\(a_{18}=49\)
\(S_{20}=?\)
A) \(530\)B) \(580\)C) \(600\)D) \(610\)E) \(622\)
8.
\(a_n\text{ is arithmetic}\)
\(a_3=11\)
\(a_7=19\)
\(S_{16}=?\)
A) \(302\)B) \(314\)C) \(326\)D) \(330\)E) \(352\)