Candidates of Indian nationality will be eligible to appear for GATE 2020.
Candidates from countries other than India will be also eligible to attempt GATE 2020.
Candidates must have passed graduation in engineering/technology or Master’s degree in any relevant science subject.
For more information, you may refer to this-
GRE doesn't have any specific eligibility criteria. You may refer to this for more information on the examination-
It is just a English test and any candidate can pursue it. Here are more details-
The eligibilty criteria for GATE is that you need to pursue your Bachelor's degree in a technical course (B.Tech., B.Arch.). The eligibilty criteria for GRE is that candidate needs to pursue Bachelor's degree in any course. The eligibilty criteria for TOEFL is that candidate needs to pass Senior School Certificate examination.