Permutation groups

Question

Comments

What does $\oplus$ mean here?

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I am also confused. but answer key is,

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Bro, don't get the first part. How they took $\alpha_{1}, \alpha_{2}, \alpha_{3} $?

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same here, and i dont know really much about permutation groups.

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i think here use symbol a,b,c so in S :  

first is I indicate identity element which is  alpha1 =  a     b    c

                                                                             a    b     c

  but i also doubt here alpha2 and alpha3  how write is???

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btw Which test series is it?

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It is a a question from The Gate Academy test.