Problem $5$: Examine Missing values

When you ran simple descriptive statistics previously, you would have noticed that two variables had missing values, which might have given you some trouble while you visualized the data.

Write the codes that tell you

$(1)$where the missing values are located,

$(2)$ the number of missing values in the dataset $($df$),$

$(3)$ the number of missing values in the Solar.R column, and

$(4)$ all the rows that include at least one missing value.

$(5)$ Lastly, write the code that returns the number of rows with at least one missing value. Hint: some rows have more than one missing value.