Question

How many longitudes are there in a globe? a. 18 b. 20 c. 22 d. 24

Answer 1

There is an infinite number of possible longitudinal lines. But the total number of degrees is 360; 180 east and 180 west. There are 60 minutes in a degree and 60 seconds in the minute. How you sub-divide from there gives infinite possibilities.
There are usually 36 lines of longitude on the globe or a map, located at 10 degrees longitude apart.