Question

How many 2-letter combinations can be created from the distinct letters in the word "mathematician"? Assume that the

order of the letters does not matter.
28
56
78
156

Answer 1

A.

Explanation:

hope this helps :)

Answer 2

Option A.

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
`=^8C_2`

`=(8!)/(2!(8-2)!)`

`=(8* 7* 6!)/(2* 6!)`

`=28`

Therefore, the correct option is A.