Which option gives the first four terms of an AP with (a_1=11) and (d=-2)?
Answer and explanation
Correct answer: (11, 9, 7, 5)
In an AP, the common difference d is added to each term to get the next term. Here d = -2, so starting from 11 gives 9, 7, and 5. Option B has a common difference of +2, so it is incorrect. Exam tip: a negative d means that the terms decrease successively.
Frequently asked questions
What is the correct answer to this question?
(11, 9, 7, 5)
Why is this the correct answer?
In an AP, the common difference d is added to each term to get the next term. Here d = -2, so starting from 11 gives 9, 7, and 5. Option B has a common difference of +2, so it is incorrect. Exam tip: a negative d means that the terms decrease successively.
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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