Why is the ‘S’ of System.out.println() function capital?

Why is the ‘S’ of System.out.println() function capital?
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A: System is the name of a class present in java,lang package and hence it begins with a capital letter as is the convention for class names.
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The simplified function in product of sums of Boolean function F(W, X, Y, Z) = Σ(0, 1, 2, 5, 8, 9, 10) is (A) (W' + X') (Y' + Z') (X' + Z) (B) (W' + X') (Y' + Z') (X' + Z') (C) (W' + X') (Y' + Z) (X' + Z) (D) (W' + X') (Y + Z') (X' + Z)

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An artificial neurons receives n inputs x1, x2,...,xn with weights w1,w2,...,wn attached to the input links. The weighted sum ............... is computed to be passed on to a non-linear filter ϕ called activation function to release the output. (A) Σ wi (B) Σ xi (C) Σ wi + Σ xi (D) Σ wi . Σ xi

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The sum of products expansion for the function F(x, y, z) = (x + y)z’ is given as (A) x’y’z + xyz’ + x’yz’ (B) xyz + xyz’ + xy’z’ (C) xy’z’ + x’y’z’ + xyz’ (D) xyz’ + xy’z’ + x’yz’

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