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A bag contains six balls of different co...

A bag contains six balls of different colours.Two balls are drawn in succession with replacement.The probability that both the balls are of the same colour is `p`.Next four balls are drawn in succession with replacement and the probability that exactly three balls are of the same colour is `q`.If `p:q=m:n`, where `m` and `n` are co-prime,then `m+n` is equal to

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