There are counters available in \(3\) different colours (atleast four of each colour). Counters ...

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There are counters available in \(3\) different colours (atleast four of each colour). Counters are all alike except for the colour. If \(m\) denotes the number of arrangements of four counters if no arrangement consists of counters of same colour and \(n\) denotes the corresponding figure when every arrangement consists of counters of each colour, then ?
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