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What is the (n)th term of the sequence (20,17,14,11,8,\ldots)?
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Answer and explanation
Correct answer: (23-3n)
The first term is (20) and the difference is (-3), so (a_n=20+(n-1)(-3)=23-3n). Take the difference as negative in a decreasing sequence.
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What is the correct answer to this question?
(23-3n)
Why is this the correct answer?
The first term is (20) and the difference is (-3), so (a_n=20+(n-1)(-3)=23-3n). Take the difference as negative in a decreasing sequence.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: nth term.
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