I got it @Shaik Masthan brother : )
@Hemanth_13 brother what's wrong with my approach I also did the same only I assumed x to be number of states and later divided it by 2 :/
@Na462 On solving x = 8 And number of states = 2* number of flip flops
you got 8--> here 8 means MOD 8 counter.
Now the question is for johnson counter how many flip flops are needed for a MOD 8 counter , we need 4 ( as it is 2n counter)
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