Hello.
Yes , your mentioned exams SAT, TOFEL, IELTS  will be helpful for getting into foreign universities for MDS , almost all Universities in maximum countries require one English language proficiency test which may be either TOFEL or IELTS , now it's your choice which one you will go for and now if it is about SAT so in such it is not mandatory but majority of University accept your admission through SAT exam also, while apart from this some other exams are also accepted for admission in foreign universities .
Best of luck.

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