This is up to you.
It depends on how much you already know of the three subjects and how you usually study.
The student counselor in your school can best help you in deciding which subjects you should choose, while keeping in mind your competencies. However; you should go for the subjects of your interest.
Sometimes schools also teach some skills that are very important for student to establish a career. And how does one determine what subjects can be applied in a workplace? If students only take subjects directly related to a specific job, they will be stuck in that one job for the rest of their lives. There is so much inter-relationship between subjects, whether you are aware of it or not, that it can become a real handicap in future endeavors.
There should be mutual respect.
You can have one of the engineering subjects as an optional subject. Or you can pick any two optional subjects for the mains and one for the prelims. For a list of optionals and more info try http://iasguide.googlepages.com
Math and physical science and lots of both. Take calculus in high school if you can.science and maths
Yes, subjects and verbs should always agree.The boys always eat rice for breakfast.The boy always eats rice for breakfast.
math Mathematics shall be necessary, houwever you may need an English option for Reading and Spelling purposes.
4 mintues should be enough to do everything for a high school student.
If you are writing about taking math and science this year, do not capitalize them.
I don't understand what mechatronics is but why should any subject not be suitable for girls? Do you think girls are too stupid to study certain subjects? A student's sex is not relevant.
School software is very useful especially for children that will soon attend a regular school. For high school student, it is not advisable since the subjects are more complex.
Your a horrible student in school you should alrady know thisYOU'RE a horrible student; you should know the difference between "you're" and "your", how to spell "already", and how to structure a sentence properly.