0 reads0 ratings0 helpful
The sum of three consecutive terms of an AP is 60. Which term among them must be 20?
Advertisement
Answer and explanation
Correct answer: Second (middle) term
Write three consecutive AP terms as \(a-d, a, a+d\). Their sum is \(3a=60\), so the middle term is \(a=20\). The first and third terms depend on \(d\). Exam tip: the sum of three consecutive AP terms is always three times the middle term.
Frequently asked questions
What is the correct answer to this question?
Second (middle) term
Why is this the correct answer?
Write three consecutive AP terms as \(a-d, a, a+d\). Their sum is \(3a=60\), so the middle term is \(a=20\). The first and third terms depend on \(d\). Exam tip: the sum of three consecutive AP terms is always three times the middle term.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Word problems based on APs.
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
Advertisement