Finding a term

Exercise and reference answers

Questions

1. Question

   A GP starts at 3 with common ratio 2. Its third term is

   Choices

   1. 6
   2. 12
   3. 8

   Correct choice

   12

2. Question

   Its fourth term is

   Choices

   1. 18
   2. 16
   3. 24

   Correct choice

   24

3. Question

   A sequence 5, 10, 20, 40 has common ratio

   Choices

   1. 2
   2. 5
   3. 10

   Correct choice

   2

4. Question

   The term after 40 is

   Choices

   1. 60
   2. 80
   3. 45

   Correct choice

   80

Explanation