Question

The probability of obtaining a head when a certain coin

Answer 1

50% or is 50/50 because there are 2 sides.

Glad I could hep, and good luck!

Answer 2

...is flipped? If that's the rest of the question, the answer is 50/50 chance because on a coin, there is one side that's heads, the other side is tails.
Hope this helps!:)