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Course: Class 10 (Old) > Unit 5

Lesson 3: nth term of an AP
Math
Class 10 (Old)
Arithmetic progressions
nth term of an AP
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nth term of an arithmetic progression (advanced)

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Problem

The sum of three consecutive terms of an arithmetic progression is 204.
The third term is 26 less than twice the first term.
Find the common difference, d.
d=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi