IN A THROW OF A DIE, A SUCCES IS DEFINED AS THE OUTCOME OF 1 OR 2. IF A DIE IS THROWN 12 TIMES
A, CACULATE THE PROBABILITY OF MORE THAN TWO SUCCESSES
B, AT MOST TWO SUCCESSES
C, OBTAIN THE PGF OF THE UNDERLYING RANDOM VARIABLE X AND USE IT TO DERIVE THE MEAN AND VARIANCE OF X
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