combed
The word combed has 6 letters, only 1 of which is the letter d.
So, the fraction is 1/6.
Dividing, if you round to the nearest hundredth, the decimal is 0.17.
Using the fraction again, if you multiply 1/6 by 100 to make it 100/6 and then round to the nearest hundredth, you get 16.67 %.
Likelihood of the event happening can be represented in any of the above ways shown above.