Duolingo English Test

Are we allowed to use external mouse in the test? And is it compulsory to use passport for identification?

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?

I got admits from 1.) University of South florida(MsCs)- No funding , costs around 23-25 lakhs

2.) University of Cincinnati (MengCs)- 1 year course with 9.5k scholarship ,Costs around 15 lakhs Which should I go for

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