यदि (a=13), (d=6) और \(a_n=121\) है तो (n) का मान क्या है?

If (a=13), (d=6), and \(a_n=121\), what is the value of (n)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (19)

Step 1

Concept

From (121=13+(n-1)6), (108=6(n-1)) so (n=19). After finding (n-1), add (1).

Step 2

Why this answer is correct

The correct answer is C. (19). From (121=13+(n-1)6), (108=6(n-1)) so (n=19). After finding (n-1), add (1).

Step 3

Exam Tip

(121=13+(n-1)6) से (108=6(n-1)) इसलिए (n=19)। (n-1) मिलने के बाद (1) जरूर जोड़ें।

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Mathematics Answer, Explanation and Revision Hints

यदि (a=13), (d=6) और \(a_n=121\) है तो (n) का मान क्या है? / If (a=13), (d=6), and \(a_n=121\), what is the value of (n)?

Correct Answer: C. (19). Explanation: (121=13+(n-1)6) से (108=6(n-1)) इसलिए (n=19)। (n-1) मिलने के बाद (1) जरूर जोड़ें। / From (121=13+(n-1)6), (108=6(n-1)) so (n=19). After finding (n-1), add (1).

Which concept should I revise for this Mathematics MCQ?

From (121=13+(n-1)6), (108=6(n-1)) so (n=19). After finding (n-1), add (1).

What exam hint can help solve this Mathematics question?

(121=13+(n-1)6) से (108=6(n-1)) इसलिए (n=19)। (n-1) मिलने के बाद (1) जरूर जोड़ें।