Do Professional LOR’s require any stamp from the company?

Do we need to get the lor sealed / stamped or is it not required and can we submit a pdf?

Which list of a triangle’s side lengths is impossible? (GMAT Quants)

Which list of a triangle’s side lengths is impossible? a. 4, 7, 4 b. 2, 3, 7 c. 2, 8, 7 d. 5, 6, 7

My chances for North eastern univ , Boston For ms in CS fall 2022 pls tell me

B.E.: ECECgpa:8.0Ielts:8Gre:299(144v,155q,4awa) 3 projects2 months internship in web development And also how is

MSBA at University of Cincinnati vs University of Utah?

I have admits from these colleges and need help in deciding which one to choose. Any help/guidance would be appreciated