एक समान अंतर वाले अनुक्रम में \(a_6=41\) और \(a_{15}=104\) है। \(a_1\) क्या होगा?

In a sequence with equal differences, \(a_6=41\) and \(a_{15}=104\). What will \(a_1\) be?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (6)

Step 1

Concept

The sum of (9) differences is (104-41=63), so the difference is (7). Thus \(a_1=41-5\times7=6\).

Step 2

Why this answer is correct

The correct answer is C. (6). The sum of (9) differences is (104-41=63), so the difference is (7). Thus \(a_1=41-5\times7=6\).

Step 3

Exam Tip

(9) अंतरों का योग (104-41=63) है इसलिए अंतर (7) है। \(a_1=41-5\times7=6\) होगा।

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एक समान अंतर वाले अनुक्रम में \(a_6=41\) और \(a_{15}=104\) है। \(a_1\) क्या होगा? / In a sequence with equal differences, \(a_6=41\) and \(a_{15}=104\). What will \(a_1\) be?

Correct Answer: C. (6). Explanation: (9) अंतरों का योग (104-41=63) है इसलिए अंतर (7) है। \(a_1=41-5\times7=6\) होगा। / The sum of (9) differences is (104-41=63), so the difference is (7). Thus \(a_1=41-5\times7=6\).

Which concept should I revise for this Mathematics MCQ?

The sum of (9) differences is (104-41=63), so the difference is (7). Thus \(a_1=41-5\times7=6\).

What exam hint can help solve this Mathematics question?

(9) अंतरों का योग (104-41=63) है इसलिए अंतर (7) है। \(a_1=41-5\times7=6\) होगा।