Rahul remembers that his exam will be after 12th September and before 19th September while Sahil remembers that their exam will be after 13th September and before 20th September and Sonali says that her examination will be after 15th September and before 22nd September. What is the exact date of their exam?
1
16th September
2
17th September
3
18th September
4
19th September
5
Can not be determined.