Scholastic Assessment Test (SAT) is an internationally recognized entrance test conducted by College Board at University level to check the readiness of a candidate for college. This exam is conducted for admissions to several universities and colleges in the United States, Canada, Australia and other countries

There are different stream in which we can enter through SAT like World History, Literature, Mathematics, Chemistry and so on. So for different streams there are different exam pattern. To know about exam pattern of each and every stream refer to the link given below :-

https://studyabroad.careers360.com/articles/sat-exam-pattern

Now coming to your last question, yes each and every student can crack SAT but the condition is he/she should have done better preparation because no exam is hard if you prepare well. Exam is hard for those who does not have any idea about exam.

For more details refer to the link given below :-

https://studyabroad.careers360.com/exams/sat-assessments

I hope this information helps you.

Good Luck!!