JAMB Mathematics questions: Progressions

26 questions with answers and explanations. Tap an option to check yourself.

1. Question 21· Progressions· JAMB

   The sum of the first n terms of an arithmetic progression is n² + 2n. Find the first term.

   • A4
   • B1
   • C2
   • D3

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   Explanation and discussion

2. Question 22· Progressions· JAMB

   Insert two arithmetic means between 5 and 20.

   • A8 and 16
   • B10 and 15
   • C10 and 20
   • D12 and 15

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   Explanation and discussion

3. Question 23· Progressions· JAMB

   The second and fifth terms of a geometric progression are 6 and 162. Find the common ratio.

   • A2
   • B9
   • C27
   • D3

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   Explanation and discussion

4. Question 24· Progressions· JAMB

   A geometric progression has first term 5 and common ratio 2. Find the sum of its first 4 terms.

   • A80
   • B40
   • C75
   • D155

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5. Question 25· Progressions· JAMB

   The third term of an arithmetic progression is 11 and the seventh term is 27. Find the common difference.

   • A5
   • B3
   • C4
   • D8

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6. Question 26· Progressions· JAMB

   How many terms of the AP 3, 7, 11, ... must be added to give 210?

   • A14
   • B10
   • C21
   • D12

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   Explanation and discussion