In the month of March, the weather forecast department gives the prediction of weather for the month of April. The given table shows the probabilities of forecast of different days: 
 
Days Sunny Cloudy Partially cloudy Rainy
Probability
\(\frac{3}{5}\)
\(x\)
\(\frac{1}{10}\)
\(y\)
 
Based on the above information, solve the following questions: 
 
1. The number of sunny days in April is
 
2. If the number of cloudy days in April is \(3\), then \(x =\) ii
 
3. The probability that the day is not rainy, is  ii
[NOTE: Without simplication]
 
4. If the sum of \(x\) and \(y\) is \(\frac{4}{10}\), then the number of rainy days in April is ii
[NOTE: Without simplication]
 
5. Find the number of partially cloudy days: