Answer:
Option A.
Step-by-step explanation:
The given word is "mathematician".
Here, total number of letter is 13 and
Number of distinct letters = 8
We need to select 2 distinct letters from word "mathematician".
It means we need to select 2 letters from 8 distinct letters.
Total ways [tex]=^8C_2[/tex]
[tex]=\dfrac{8!}{2!(8-2)!}[/tex]
[tex]=\dfrac{8\times 7\times 6!}{2\times 6!}[/tex]
[tex]=28[/tex]
Therefore, the correct option is A.
