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JAMB Mathematics 2018 Paper
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© africaexams.com
Question : 33
Total: 62
In how many ways can the letters LEADER be arranged?
72
144
360
720
Validate
Solution:
The word LEADER has 1L 2E 1A 1D and 1R making total of 6!
6
1
!
2
!
1
!
1
!
1
!
=
6
!
2
!
=
6
×
5
×
4
×
3
×
2
×
1
2
×
1
= 360
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