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Let M=[{:(0,,1,,a),(1,,2,,3),(3,,b,,1):}...

Let `M=[{:(0,,1,,a),(1,,2,,3),(3,,b,,1):}]`and adj `M =[{:(-1,,1,,-1),(8,,-6,,2),(-5,,3,,-1):}]`
where a and b are real numbers. Which of the following options is/are correct ?

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