If (a=9) and (d=-2), what is the second term of the arithmetic progression?
Answer and explanation
Correct answer: 7
The second term of an arithmetic progression is given by \(a_2=a+d\). Thus, \(a_2=9+(-2)=7\). The value 9 is the first term, while 11 results from incorrectly adding 2 instead of adding the negative common difference. In exams, pay careful attention to the sign of the common difference.
Frequently asked questions
What is the correct answer to this question?
7
Why is this the correct answer?
The second term of an arithmetic progression is given by \(a_2=a+d\). Thus, \(a_2=9+(-2)=7\). The value 9 is the first term, while 11 results from incorrectly adding 2 instead of adding the negative common difference. In exams, pay careful attention to the sign of the common difference.
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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