The table below describes phone calls made on the planet K-2L last year. The columns show calls dialed by men versus women, and the rows show the distribution of call lengths. (Note that this is not real data.)
There were 312,480,000 phone calls made by women that lasted 30 minutes or more.
How many calls made by men lasted 0 to 5 minutes?
Consider 3 particular phone calls from last year.
The first call was made by a man.
The second was made by a woman.
The third was made by someone of unknown gender.