QUIZ ON SEQUENCES

Which of the following is an arithmetic sequence?

• 2, 4, 6, 8, ...

• 2, 4, 8, 16, ...

• 1, 3, 6, 10, ...
  

• 5, 10, 20, 40, ...

• In an arithmetic sequence, the common difference is:
  

• Varies with position
  

• Always negative

• Constant

• Equal to the first term

Which of the following are arithmetic sequences?

• 10, 20, 30, 40
  

• 3, 6, 12, 24

• 2, 5, 8, 11

• 7, 7, 7, 7

Which of the following are geometric sequences?

• 2, 4, 8, 16, ...
  

• 3, 6, 9, 12, ...

• 1, 2, 4, 8, ...

• 100, 50, 25, 12.5, ...

All arithmetic sequences are also geometric.

• True
• False

What is the 5th term of the sequence: 3, 7, 11, 15, ...?

• 19
  

• 23
  

• 17
  

• 27

A sequence where each term is multiplied by the same number to get the next is called:

• Arithmetic sequence

• Harmonic sequence
  

• Geometric sequence

• Linear sequence

Which of the following represent finite sequences?

• 1, 2, 3, 4
  

• 1, 3, 5, 7, 9, 11
  

• 1, 2, 3, ...
  

• 10, 20, 40, 80

Which of the following sequences are geometric?

• 2, 6, 18, 54
  

• 5, 10, 15, 20
  

• 
  81, 27, 9, 3
  

• 1, 2, 4, 8

The 6th term of the arithmetic sequence 2, 5, 8, 11, ... is