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Matrices of order 3xx3 are formed by usi...

Matrices of order `3xx3` are formed by using the elements of the set `A={-3,-2,-1,0,1,2,3}`, then probability that matrix is either symmetric or skew symmetric is

A

` (1)/( 7^(5))+ ( 1)/(7^(5))`

B

` (1)/( 7^(9))+( 1)/(7^(3))-(1)/(7^(6))`

C

` -(1)/( 7^(3))+(1)/( 7^(6))`

D

` (1)/( 7^(3))+(1)/( 7^(6)) -( 1)/( 7^(9))`

Text Solution

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The correct Answer is:
D
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