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If (a-2, 2a+1, 5a-4) are in an arithmetic progression, what is the common difference?
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Answer and explanation
Correct answer: (6)
From (2(2a+1)=(a-2)+(5a-4)), (4a+2=6a-6), so (a=4), and (d=9-2=7). In such questions find the variable first and then find (d).
Frequently asked questions
What is the correct answer to this question?
(6)
Why is this the correct answer?
From (2(2a+1)=(a-2)+(5a-4)), (4a+2=6a-6), so (a=4), and (d=9-2=7). In such questions find the variable first and then find (d).
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Introduction to APs and common difference..
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