# You Be The Detective - 2

Logic Level 1

Another robbery is committed. This time though, Rocky, Bob and Mike (the friends of the trio from You Be The Detective - 1) are brought for questioning. Sub-Inspector Milind found that:

$$(1)$$ If Rocky is guilty and Bob is innocent, then Mike must be guilty.

$$(2)$$ Mike never works alone.

$$(3)$$ Rocky and Mike never work together.

$$(4)$$ No one other than Rocky, Bob and Mike are involved and at least one of them is guilty.

Only you can help Milind now, to find the person who is necessarily guilty.

This problem is the part of my set Is This What You Call Logic?!

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