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

If ( X^a x Y^b x Z^c) equals the product of 154 and 56... (GRE Quant)

If ( X^a x Y^b x Z^c) equals the product of 154 and 56, z > y > x, and a > b > c, then what is the value of (a^X x b^Y x

I am not sure which one to select for electrical engineering

1. Technical university of Denmark2. University of MinnesotaCan someone please help me with this Thanks in advance

University suggestions for MSCS Fall 2022

Gre: 330 ( 170 quant, 160 verbal, 3 awa) Cgpa: 7 Ielts : 7 Work experience: 10 months as software developer in infosys