A Company wishes to simultaneously promote two of its 6 department heads out of 6 to assistant manag

M4maths Previous Puzzles

23 Dec 2020 COMBINATION

A Company wishes to simultaneously promote two of its 6 department heads out of 6 to assistant managers. In how many ways these promotions can take place?

OPtion

1) 14
2) 12
3) 10
4) 11
5) 13
6) 15
7) 16
8) 9
9) 18
10) None of the above

Solution

: This is a problem of combination.
Hence, the promotions can be done in 6 C2
= 6×5 / 2 = 15 ways

Correct Option: 6 Best Solution (2)