1. What is the sum of the first 25 counting numbers?
A 32 B. 325 C. 350 D. 360

2. Find the sum of the first 5 terms of the arithmetic sequence whose general term is an = 3n+ 5.
A. 70 B. 60 C. 50 D. 20

3. What is the fifth term in the geometric sequence 48, 24, 12,...?
A 6 B.3 C. 1.5 D. 2.5

4. What are the first four terms of a sequence if the first term is 2 and each term is 6 more than the preceding term?
A.2,4,6,8 B. 2,5,8,11 C. 2, 8,14,20,26 D. 2, 3, 4, 5

5. Find the fifth term of a geometric sequence in which the fourth term is 4 and sixth term is 36, and the common ratio is negative-3.
A. -6 B.-12 C.-18

6. Find the next term in the sequence 5, 10, 20, 40,...
A 80 B. 70 D.-24 C. 60 D. 50

7. Find the sum of the first 6th terms of the sequence in which the first term is 2 and common difference of 3.
A.57 B. 58 C. 59 D. 60

8. In the geometric sequence 54, 27, 13.5,... what is the common ratio?
A.1/3 B.-1/3 C.1/2 D.-1/2

9. What is the sum of all positive even integers between 29 and 100?
A 2340 B. 4 680 C. 4 860 D.2900

10. Determine the common ratio of the sequence 5,5x,5x2,5x3.
A.x B.5x C.5 D.3​