Let \( p_{n} \) denote the probability of getting \( n \) heads whe...

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Let \( p_{n} \) denote the probability of getting \( n \) heads when a fair coin is tossed \( m \) times. If \( p_{4}, p_{5}, p_{6} \) are in A.P., then value of \( m \) can be
(a) 5
(b) 7
(c) 10
(d) 14
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