A : ∣∣
∣∣0p−ee−re−p0r−pr−ep−r0∣∣
∣∣ =0 R : The determinant of a skew symmetric matrix is zero The correct answer is
A
Both A and R are true R is correct explanation to A
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B
Both A and R are true but R is not correct explanation to A
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C
A is true R is false
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D
A is false R is true
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Solution
The correct option is C A is true R is false Let A=⎡⎢⎣0p−ee−re−p0r−pr−ep−r0⎤⎥⎦ Here, AT=⎡⎢⎣0e−pr−ep−e0p−re−rr−p0⎤⎥⎦ ⇒AT=−A Hence, A is skew-symmetric matrix of order 3. Determinant of a skew symmetric matrix of odd order is 0.