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In an AP, (a_2+a_4=30) and (a_3=15). What is certain about the common difference?
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Answer and explanation
Correct answer: (d) cannot be determined
In an AP, (a_2+a_4=2a_3) is automatically true, so (d) is not found. In exams, check whether the information is new or just an identity.
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What is the correct answer to this question?
(d) cannot be determined
Why is this the correct answer?
In an AP, (a_2+a_4=2a_3) is automatically true, so (d) is not found. In exams, check whether the information is new or just an identity.
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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