A senatorial candidate had planned to visit sev... - JAMB Mathematics 2007 Question
A senatorial candidate had planned to visit seven cities prior to a primary election. However, he could only visit four of the cities. How many different itineraries could be considered?
A
640
B
840
C
520
D
920
correct option: b
Number of itineraries = 7P4
=(\frac{7!}{(7-4)!}\
=\frac{7!}{3!}\
=\frac{7 \times 6 \times 5 \times 4 \times 3!}{3!}\
=840)
Please share this, thanks:
#JAMB #JAMB
Add your answer
No responses