Brody is registering for a physics class.  The morning classes are 1st, 2nd, and 3rd periods, and the afternoon classes are 4th, 5th, and 6th periods.   Below is a table of teachers and the periods they teach the math class.  What is the probability that Brody will be assigned a 2nd block or 3rd block class?

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A: * SOLUTION :-

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