Find the 9th term of the arithmetic progression 18, 12, 6, 0, -6 ………

Mathematics WAEC 1996

Find the 9th term of the arithmetic progression 18, 12, 6, 0, -6 ………

  • -54
  • -30 checkmark
  • 30
  • 42
  • 66

The correct answer is: B

Explanation

18, 12, 6, 0, -6, 12, -18, 24, -30
9th term = -30
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