If \( x, y \), and \( z \) are distinct prime numbers, then (a) \( x, y \) and \( z \) may be in...

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If \( x, y \), and \( z \) are distinct prime numbers, then
(a) \( x, y \) and \( z \) may be in A.P. but not in G.P.
(b) \( x, y \), and \( z \) may be in G.P. but not in A.P.
(c) \( x, y \), and \( z \) can neither be in A.P. nor in G.P.
(d) none of these
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