Options:
A.
B.
C.
D.
Sign in to view the correct answer and detailed explanation.
Ulearngo is an independent study app. It is not affiliated with, endorsed by, or representing University of Ilorin (UNILORIN). Always confirm official exam, admission, registration, syllabus, timetable, and result information from UNILORIN official website.
Earlier discussion
1 older comment kept for context.
Salami Taofeek (Harjii)
The answer is 9 since we are not told that 20 & 60 inclusive.