If an arithmetic progression has (a=28) and second term (19), what is the common difference?
Answer and explanation
Correct answer: -9
In an AP, the first term is \(a=28\) and the second term is \(a+d=19\). Therefore, \(d=19-28=-9\). Hence, the correct answer is \(-9\). Choosing \(9\) misses the negative sign of the difference. Exam tip: To find the common difference, subtract the previous term from the next term.
Frequently asked questions
What is the correct answer to this question?
-9
Why is this the correct answer?
In an AP, the first term is \(a=28\) and the second term is \(a+d=19\). Therefore, \(d=19-28=-9\). Hence, the correct answer is \(-9\). Choosing \(9\) misses the negative sign of the difference. Exam tip: To find the common difference, subtract the previous term from the next term.
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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