• Math

  Arithmetic Progression

  Posted by Prateek on January 18, 2024 at 12:41 pm

  Which term of the AP: 21, 18, 15, . . . is – 81? Also, is any term 0? Give a reason for your answer.

  Bharti Kumari replied 1 year, 2 months ago 2 Members · 1 Reply

  • arithmetic
  • arithmetic progression
• 1 Reply

• 

  Bharti Kumari

  Member

  January 27, 2024 at 5:37 pm

  The common difference in the arithmetic progression (AP) is -3. To find the term that is -81, we can use the formula: term = first term + (n – 1) * common difference. Solving for n, we get n = (term – first term) / common difference = (-81 – 21) / -3 = 34. No term in the given AP is 0 because the first term is 21 and the common difference is -3, so the terms are decreasing from 21.

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