The number of values of \( a \in N \) such that the variance
\( \ma...
The number of values of \( a \in N \) such that the variance
\( \mathrm{P} \) of \( 3,7,12, a, 43-a \) is a natural number is:
W
(1) 0
(2) 2
(3) 5
(4) infinite
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