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JAMB Mathematics 1994 Question 19

Question 19

Progressions

If the 6th term of an arithmetic progression is 11 and the first term is 1, find the common difference.

  1. A.12/5
  2. B.5/3
  3. C.−2
  4. D.2
Show the answer and explanation

Answer: D (2)

Explanation

The 6th term is a + 5d, so 1 + 5d = 11 and d = 2.