Hi Kavya Reddy,

I hope you are doing good. Now Coming to the age limit for the RRB NTPC exam is a minimum 18 years and maximum 32 years of age on January 1st in the year you are writing the exam. Education Qualification depends on the post you are applying for. Education Qualification for various posts is as follows:

• Degree from recognized University or Institute for the post like  Commercial Apprentice (CA), Traffic Apprentice (TA), Assistant Station Master (ASM), Enquiry/Reservation Clerk, Good Guards, Traffic Assistant. 
• Degree from recognized University or Institute + Typing Proficiency in either Hindi or Engish or Computer is essential for posts like Senior Clerk cum Typist, Junior Accounts Assistant cum Typist, Senior Time Keeper.

I hope this helps.

All the best.

Thank you.