Hello,
According to the official notification regarding the eligibility criteria, the candidate must have 50% in their undergraduate degree, it could be BA, BCom, BSc, BEd depending upon the field you choose as a TGT or JBT. Since, you scored 49.9%, you are not eligible to apply. Although there is no upper age limit, you need to satisfy all of the eligibility criteria.
If you wish to know more about the age limit, academic criteria etc, you may check the following link -
https://competition.careers360.com/articles/hp-tet-eligibility-criteria
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