Question

how to complete science within 3 days class 10

Answer 1

You need more hardwork and smart work also.

1st you complete your exercises or important questions.

Then you clear your doubt by yourself or with the help of teacher.

Answer 2

Hey there buddy.

Well if you have not utilised all these days in studying then it's a bad situation for you. However you can still excel in exams specially science. I'll tell you how.
1.Look for the main points, such as the ones written in bold or italic form. Many questions usually come from there.
2.Complete as much sample paper as you can but before that you need to understand the concept.
3.Dont worry too much everything comes easy in exams. Write whatever you understand about the given question.
Well hope you do well in the upcoming exams buddy. wish you good luck and do well.

With regards.
Sanchit