Is the TEAS 7 Hard?

What actually makes it hard

Can I pass without studying?

Unlikely, and it is a costly way to find out. Even strong candidates lose marks to pace and to the parts of Science they have not touched since school. Programmes limit retakes and charge for each attempt, so the cheapest approach is to sit one timed set first and let the result tell you how much work is needed.

Is failing the first attempt common?

Common enough that it should not be treated as a verdict on whether you belong in nursing. What matters is what you do next: work from the section breakdown on your score report rather than starting your revision over from the beginning, and check your programme's retake rules before rebooking.

What makes it easier

Diagnosing before studying, practising against a clock rather than untimed, and reading the rationale on every question including the ones you answered correctly. None of those takes extra hours. They change what the hours are spent on.