Exam scores are normally valid for three years from the day the results are released. As a result, if a candidate performs well in the test, they should avoid taking the GATE for the next three years. Aside from that, let us check how many GATE exam tries a candidate may get. There is no restriction on the number of GATE exam attempts. How many GATE attempts a candidate can make is entirely up to him or her. While some PSUs may say that the age limit is 28 or 30, the number of GATE exam tries for admission to research and post-graduate seats is totally dependent on the institution. Even though a score is only valid for three years after it is released, there is no age limit or limit on the number of attempts for GATE tests. A candidate may take the GATE examinations an unlimited number of times.