1.
The sum of the first and 14th terms of an arithmetic sequence is 80. What is the sum of the 7th and 8th terms?
80
40
20
60
2.
The sum of the first and 11th terms of an arithmetic sequence is 40. What is the sum of the 4th, 5th, 6th, 7th, and 8th terms?
100
200
50
150
3.
What is the 40th term of the arithmetic progression 3, 7, 11, 15, ...?
155
157
159
161
4.
In an arithmetic sequence, the sum of the first 15 terms is 225 and the sum of the first 20 terms is 400. What is the 25th term?
25
30
35
40
5.
Find the sum of the first 40 terms of an arithmetic progression with a₁ = 5 and d = 2.
1620
1640
1660
1680
6.
What is the 30th term of an arithmetic sequence where the first term is 2 and the common difference is 1.5?
43.5
44.5
45.5
46.5
7.
In an arithmetic sequence, the sum of the first 20 terms is 210. If the first term is 3, what is the common difference?
0.5
1
1.5
2
8.
In an arithmetic sequence, the sum of the first 8 terms is 68 and the sum of the first 15 terms is 255. What is the first term?
2
3
4
5
9.
If the sum of the first 20 terms of an arithmetic sequence is 210 and a₁ = 3, what is the common difference?
0.5
1
1.5
2
10.
Find the number of terms in the arithmetic sequence: 11, 17, 23, ..., 179.
28
29
27
30
Questions Answered: 0/10