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Column I, Column II If |A|=2,t h e n|...

Column I, Column II If `|A|=2,t h e n|2A^(-1)=(w h e r eA` is of order 3`)` , p. 1 If `|A|=1/8, t h e n|a d j(a d j(2A))|=(w h e r eA` is or order 3`)` , q. 4 If `(A+B)^2=A^2+B^2,a n d|A|=2,t h e n|B|=(w h e r eAa n dB` are of odd order`)` , r. 24 `|A_(2xx2)|=2,|B_(3xx3)=3a n d|C_(4xx4)|=4,t h e n|A B C|` is equal to, s. 0 , t. does not exist

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