A die is thrown three times and the sum of three numbers obtained i...

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A die is thrown three times and the sum of three numbers obtained is 15 . The probability of first throw being 4 is
(A) \( 1 / 18 \)
(B) \( 1 / 5 \)
(C) \( 4 / 5 \)
(D) \( 17 / 18 \)
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