What is the value of a so that the binary operation is an invertible binary operation?
2e
3e
e
0
As we learnt
Invertible Binary operation -
a*b = e = b*a
- wherein
e be the identity element for the binary operation * on A and a,b A
Option 1)
2e
Option 2)
3e
Option 3)
e
Option 4)
0
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