GRADE 10 MATH 1st SUMMATIVE TEST 2nd QUARTER

1. What is the 6^th term of the geometric sequence 1, 3, 9, …?

• A. 18

• B. 27

• C. 81

• D. 243

2. What is the common ratio in question #1?

• A. -3

• B. -1

• C. 1

• D. 3

3. Which geometric sequence has a 6^th term of -32?

• A. 1, -2, 4, …

• B. -1, 2, -4, …

• C. 2, -4, 8

• D. -2, 4, -8

4..What are the geometric means in the geometric sequence

     -3, ___, ___, 24, …?

• A. 2, -4

• B. 4, -8

• C. 6, -12

• D. 9, -18

5. Which two numbers has a geometric mean of 9?

• A. 4 and 16

• B. 6 and 12

• C. 3 and 27

• D. 18 and 81

6. What is the sum of the first six terms of the geometric sequence 2, 4, 8, …?

• A. 126

• B. 162

• C.216

• D. 261

7. What is the sum of the first five terms of the geometric      sequence 1, 4, 16, …?

• A. 256

• B. 341

• C. 1024

• D. 1301

8. What is the sum to infinity of 6, -6, 6, -6, 6, -6. ?

• A.6

• B.  -6

• C. 0

• D. 36

9. What is the sum to infinity of   5, -5, 5, -5,  5 . ?

• A.5

• B. -5

• C. 0

• D. 25

10. What is the sum of the infinite terms of the geometric sequence 20,10, 5, ….?

• A. 60

• B. 50

• C. 40

• D. 35