If you flip a coin twice what's the probability that tails comes up both times

When you flip a coin twice, you have a 50/50 chance of it land on heads or tails.

The possible combinations for fliping a coin twice:

HH (heads/heads both times)

T/H (Tails/Heads)

H/T (Heads/Tails)

or the one you're looking for ...

T/T (Tails/Tails both times)

You have a 1/4 chance of getting tails both times.