I have a work sheet on probabilities. IMPOSSIBLE (0)

UNLIKELY (1/4)
EQUALLY LIKELY (1/2)
LIKELY (3/4)
CERTAIN (1)

I have to write at least two things under each listed, and I don't know how to do this

I will start you out. the probability of getting a head when flipping a coin = 1/2. The same for getting a tail.

The probability of getting either a head or tail = 1/2 + 1/2 = 1.

Think of a spinner that can stop on one of four places for 1/4 and 3/4 probabilities.

I'll leave the rest to you.