Digital logic

Question

Answer 1

Ans B  is correct

e.g  let 2 fuctions are 1+x  and x+x'

They are same because their values are 1 for all possible 2^1 =2  combinations x=0 or x=1

but functions like 1+x  and  x are not equal  they have same value for x=1 , but different value for x=0

Comments

I am confusing that why you are taking 1+x and x+x'.

Can you please explain a bit more so that I can understand easily?

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because these 2 functions are same u can take any 2 functions which are same like x.x'  or x.o they will be same for every possible combination