1.

A die is tossed twice. Getting a number greater than 4 is considered a success. Then the variance of the probability distribution of the number of successes is        [AISSE 1979]

A.    \[\frac{2}{9}\]   
B.    \[\frac{4}{9}\]
C.    \[\frac{1}{3}\]   
D.    None of these
Answer» C.    \[\frac{1}{3}\]   


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