In the sequence (25, 21, 17, 13, ...), which term is 21?
Answer and explanation
Correct answer: Second term
The position of a term is counted from the beginning of the sequence. Here, 25 is the first term, 21 follows it, so 21 is the second term. The common difference is -4, confirming that the displayed order is 25, 21, 17, 13. Therefore, option B is correct; options A, C and D identify the positions of 25, 17 and 13 respectively.
Frequently asked questions
What is the correct answer to this question?
Second term
Why is this the correct answer?
The position of a term is counted from the beginning of the sequence. Here, 25 is the first term, 21 follows it, so 21 is the second term. The common difference is -4, confirming that the displayed order is 25, 21, 17, 13. Therefore, option B is correct; options A, C and D identify the positions of 25, 17 and 13 respectively.
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..
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
