यदि समांतर श्रेढ़ी \(2.5,5,7.5,10,\ldots\) दी हो, तो (9)वाँ पद क्या होगा?

If the AP \(2.5,5,7.5,10,\ldots\) is given, what will be the (9)th term?

Explanation opens after your attempt
Correct Answer

B. (22.5)

Step 1

Concept

Here (a=2.5), (d=2.5), so \(a_9=2.5+8\times2.5=22.5\). The same formula applies to decimals.

Step 2

Why this answer is correct

The correct answer is B. (22.5). Here (a=2.5), (d=2.5), so \(a_9=2.5+8\times2.5=22.5\). The same formula applies to decimals.

Step 3

Exam Tip

यहाँ (a=2.5), (d=2.5) है, इसलिए \(a_9=2.5+8\times2.5=22.5\)। दशमलव में भी वही सूत्र लागू होता है।

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Mathematics Answer, Explanation and Revision Hints

यदि समांतर श्रेढ़ी \(2.5,5,7.5,10,\ldots\) दी हो, तो (9)वाँ पद क्या होगा? / If the AP \(2.5,5,7.5,10,\ldots\) is given, what will be the (9)th term?

Correct Answer: B. (22.5). Explanation: यहाँ (a=2.5), (d=2.5) है, इसलिए \(a_9=2.5+8\times2.5=22.5\)। दशमलव में भी वही सूत्र लागू होता है। / Here (a=2.5), (d=2.5), so \(a_9=2.5+8\times2.5=22.5\). The same formula applies to decimals.

Which concept should I revise for this Mathematics MCQ?

Here (a=2.5), (d=2.5), so \(a_9=2.5+8\times2.5=22.5\). The same formula applies to decimals.

What exam hint can help solve this Mathematics question?

यहाँ (a=2.5), (d=2.5) है, इसलिए \(a_9=2.5+8\times2.5=22.5\)। दशमलव में भी वही सूत्र लागू होता है।