MATHEMATICS 10 SUMMATIVE TEST NO.3 NAME: DATE: GRADE & SECTION: SCORE: A. Multiple Choice. Read and analyze the following items and determine the letter of the correct answer from the given choices. Write your answer on a separate sheet of paper. 1. What expression is same as a a a'a a(b-b-b)? A. 15ab C. a3 b B. as b3 D. 5a3b 2. What is the common ratio of the sequence 1/7, 1, 7. ...? A. 7 C. 17 B. - 7 D. - 17 3. The first term of a geometric sequence is 2, and the second term is 10, what is the fifth term? A. 250 C. 500 B. 100 D. 1 250 4. The common ratio of a geometric sequence is 14, and the fourth term is 12 . What is the third term of the sequence? A. 1 C. 14 B. 12 D. 2 5. Find the 12- term of the geometric sequence 1, 2, 4,... A. 512 C. 2 048 B. 1 024 D. 1 112 For items 6 - 10, find the specified term of the following geometric sequences. 6.) 6, 12, 24. ... find a7 7.) 20, 10, 5, ... find as 8.) 7, - 14. 28, ... find as 9.) a = 2, r = 3 ... find a10 10.) a = 0, r = 12.4. find as For items 11 - 20, insert geometric means in each geometric sequence. 11-12.) 3. 27. 13.) 1/2, 1/8 14-15.] 5/2 625/16 16-18. ) 3. 19-20.) - 25 - 625