सबसे छोटा धनात्मक (n) क्या है जिसके लिए (n!) संख्या (1440) से विभाज्य हो?

What is the smallest positive (n) for which (n!) is divisible by (1440)?

Explanation opens after your attempt
Correct Answer

C. (8)

Step 1

Concept

\(1440=2^5\cdot3^2\cdot5\), and this requirement is first satisfied by (8!). For divisibility, check prime factors.

Step 2

Why this answer is correct

The correct answer is C. (8). \(1440=2^5\cdot3^2\cdot5\), and this requirement is first satisfied by (8!). For divisibility, check prime factors.

Step 3

Exam Tip

\(1440=2^5\cdot3^2\cdot5\) है और यह जरूरत पहली बार (8!) में पूरी होती है। विभाज्यता में अभाज्य गुणनखंड जांचें।

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Mathematics Answer, Explanation and Revision Hints

सबसे छोटा धनात्मक (n) क्या है जिसके लिए (n!) संख्या (1440) से विभाज्य हो? / What is the smallest positive (n) for which (n!) is divisible by (1440)?

Correct Answer: C. (8). Explanation: \(1440=2^5\cdot3^2\cdot5\) है और यह जरूरत पहली बार (8!) में पूरी होती है। विभाज्यता में अभाज्य गुणनखंड जांचें। / \(1440=2^5\cdot3^2\cdot5\), and this requirement is first satisfied by (8!). For divisibility, check prime factors.

Which concept should I revise for this Mathematics MCQ?

\(1440=2^5\cdot3^2\cdot5\), and this requirement is first satisfied by (8!). For divisibility, check prime factors.

What exam hint can help solve this Mathematics question?

\(1440=2^5\cdot3^2\cdot5\) है और यह जरूरत पहली बार (8!) में पूरी होती है। विभाज्यता में अभाज्य गुणनखंड जांचें।