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Question
The 17th term of an AP exceeds its 10th term by 21. The common difference of the AP is ______.
Options
3
2
–3
–2
MCQ
Fill in the Blanks
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Solution
The 17th term of an AP exceeds its 10th term by 21. The common difference of the AP is 3.
Explanation:
(T17 – T10) = 21
⇒ (a + 16d) – (a + 9d) = 21
⇒ 7d = 21
⇒ d = `21/7`
⇒ d = 3
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