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If (x+2,2x+1,4x-5) are three consecutive terms of a sequence with equal differences, what is the value of (x)?
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Answer and explanation
Correct answer: (5)
Equal differences give (2x+1-(x+2)=4x-5-(2x+1)), so (x=5). Exam tip: set the two consecutive differences equal.
Frequently asked questions
What is the correct answer to this question?
(5)
Why is this the correct answer?
Equal differences give (2x+1-(x+2)=4x-5-(2x+1)), so (x=5). Exam tip: set the two consecutive differences equal.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Sequences.
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