1. What is the next term in the geometric sequence 4, -12, 36? A. -42 . -54 . -72 D. -108 13 7 15 2. Find the common difference in the arithmetic sequence 3, 4 2 4 3 5 C. 2 D. 4 A. 3. Which set of numbers is an example of a harmonic sequence? 1 1 1 1 1 1 1 A. C. 2' 2' 2' 2' 3' 9' 27' 81 2 2 2 . 2' D. 2, 3' 5 7 -1 2, -4 4. What is the sum of all the odd integers between 8 and 26? A. 153 . 151 . 149 D. 148 5. If three arithmetic means are inserted between 11 and 39, find the second arthmetic mean. A. 18 . 25 . 32 D. 46 6. If three geometric means are inserted between 1 and 256, find the third geometric mean. A. 64 . 32 . 16 D. 4 1 1 1 7. What is the next term in the harmonic sequence 11' 15' 19' 23 . 25 1 C. 25 1 D. 27 A. 27 B.