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नीचे दिए गए प्रश्न के लिए अनुच्छेद

If A is a square matrix of order n, then A(adjA) = In and |adjA| = |A|n–1,

adj(kA)=kn1(adjA) and |kA|=kn|A|

यदि कोटि n वाला एक वर्ग आव्यूह A है, तब A(adjA) = In तथा |adjA| = |A|n–1

adj(kA)=kn1(adjA) तथा |kA|=kn|A|

Q. A is a square matrix of order 4 and |A| = 2, then |adj(2A)| = ?

प्रश्न - कोटि 4 वाला एक वर्ग आव्यूह A है तथा |A| = 2, तब |adj(2A)| = ?

A
212
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B
29
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C
215
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D
218
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Solution

The correct option is C 215
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