\sum_{k=3}^{5} \binom{5}{k} \Big( \frac{1}{4} \Big) ^k \Big( 1 - \frac{1}{4} \Big) ^{5-k} \sum_{k=3}^{5} \binom{5}{k} \Big( \frac{1}{4} \Big) ^k \Big( 1 - \frac{1}{4} \Big) ^{5-k}

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