B.Sc

The educational qualification and age criteria for CDS exam is given below-
Indian Military Academy:- You need to be a graduate in any discipline from a recognised university. Your age should be between 19 to 24 years. Air Force Academy:- You need to have a Bachelor's degree in Science with physics or mathematics or B.E. /B.Tech in engineering or technology. Your age should be between 19 to 23 years. Naval Academy:- You need to complete your graduation in engineering or technology or you can do B.Sc. Degree with physics or mathematics. Your age should be between 19 to 23 years. Officer's Training Academy:- You need to have a Bachelor's degree in any discipline from a recognised university or institution. Your age should be between 19 to 25 years. For more details about CDS exam and Application process, you can visit the official website http://www.upsc.gov.in.

Hello Amaira,
At undergraduate level in Maths (Hons), one studies mostly theoretical subjects with main emphasis on core subjects. Also, one gets to programme computer based mathematical models on software such as MATLAB - MathWorks, Wolfram Mathematics etc. Further the following subjects are taught;
Real Analysis
Algebra
Differential Equation
Calculus
Linear Programming
Probability and Statistics
Numerical Methods (programming)
Analysis and Algebra are purely theoretical subjects and are based on logic. Others are simple. Programming is very simple and fun. Before I forget to mention, you will most probably be taught one Credit course every semester. Delhi University has introduced CBCS pattern at undergraduate level from this year. In this pattern, student has to earn credit points to pass the semester.
Good luck.