If you flip two coins at once, will at least one coin land on heads?

There is 3 out of 4 chance you will get one head.

You are not guaranteed to get a head

Step-by-step explanation:

Lets determine the sample space

HH HT TH TT

These are the 4 things that can happen when we flip to coins

We want at least one head

3 of the 4 choices have at least 1 head

P (at least one head) = 3/4