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

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

Therefore, the correct option is A.

47 - 90 = 43

43 - 180 = x

x = 137

vertical asymptote .

horizontal asymptote .

step-by-step explanation:

given function is .

vertical asymptote is given by setting

denominator =0

when degree of numerator and denominator are same then divide first term of numerator by first term of denominator to get horizontal asymptote.