यदि \(a_n=pn^2+q\), \(a_1=5\) और \(a_2=14\) है तो \(a_4\) क्या होगा?

If \(a_n=pn^2+q\), \(a_1=5\) and \(a_2=14\), what will be \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (50)

Step 1

Concept

From (p+q=5) and (4p+q=14), we get (p=3) and (q=2). Then \(a_4=50\).

Step 2

Why this answer is correct

The correct answer is B. (50). From (p+q=5) and (4p+q=14), we get (p=3) and (q=2). Then \(a_4=50\).

Step 3

Exam Tip

(p+q=5) और (4p+q=14) से (p=3) और (q=2) मिलता है। फिर \(a_4=50\) होगा।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=pn^2+q\), \(a_1=5\) और \(a_2=14\) है तो \(a_4\) क्या होगा? / If \(a_n=pn^2+q\), \(a_1=5\) and \(a_2=14\), what will be \(a_4\)?

Correct Answer: B. (50). Explanation: (p+q=5) और (4p+q=14) से (p=3) और (q=2) मिलता है। फिर \(a_4=50\) होगा। / From (p+q=5) and (4p+q=14), we get (p=3) and (q=2). Then \(a_4=50\).

Which concept should I revise for this Mathematics MCQ?

From (p+q=5) and (4p+q=14), we get (p=3) and (q=2). Then \(a_4=50\).

What exam hint can help solve this Mathematics question?

(p+q=5) और (4p+q=14) से (p=3) और (q=2) मिलता है। फिर \(a_4=50\) होगा।