अनुक्रम \(9,19,29,39,\ldots\) का (n)वाँ पद कौन-सा है?

What is the (n)th term of the sequence \(9,19,29,39,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (10n-1)

Step 1

Concept

The first term is (9) and the difference is (10), so (a_n=9+(n-1)10=10n-1). Check by putting (n=1).

Step 2

Why this answer is correct

The correct answer is A. (10n-1). The first term is (9) and the difference is (10), so (a_n=9+(n-1)10=10n-1). Check by putting (n=1).

Step 3

Exam Tip

पहला पद (9) और अंतर (10) है, इसलिए (a_n=9+(n-1)10=10n-1)। पहले पद पर (n=1) रखकर जांचें।

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Mathematics Answer, Explanation and Revision Hints

अनुक्रम \(9,19,29,39,\ldots\) का (n)वाँ पद कौन-सा है? / What is the (n)th term of the sequence \(9,19,29,39,\ldots\)?

Correct Answer: A. (10n-1). Explanation: पहला पद (9) और अंतर (10) है, इसलिए (a_n=9+(n-1)10=10n-1)। पहले पद पर (n=1) रखकर जांचें। / The first term is (9) and the difference is (10), so (a_n=9+(n-1)10=10n-1). Check by putting (n=1).

Which concept should I revise for this Mathematics MCQ?

The first term is (9) and the difference is (10), so (a_n=9+(n-1)10=10n-1). Check by putting (n=1).

What exam hint can help solve this Mathematics question?

पहला पद (9) और अंतर (10) है, इसलिए (a_n=9+(n-1)10=10n-1)। पहले पद पर (n=1) रखकर जांचें।