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The (n)th term of the AP (27,24,21,\ldots) is (-30). What is (n)?
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Answer and explanation
Correct answer: (20)
From (-30=27+(n-1)(-3)), (57=3(n-1)), so (n=20). Handle signs carefully with a negative target term.
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What is the correct answer to this question?
(20)
Why is this the correct answer?
From (-30=27+(n-1)(-3)), (57=3(n-1)), so (n=20). Handle signs carefully with a negative target term.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Finding the $n$th term of an AP.
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