Each ticket is exactly one of four colours.
| Colour | Red | Blue | Gold | White |
|---|---|---|---|---|
| Probability | \(0.35\) | \(0.25\) | \(0.10\) | \(w\) |
One ticket is selected.
Find \(w\).
Find the probability that the ticket is red or blue.
Find the probability that it is neither red nor blue.
Find the probability that it is both red and blue.
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