Just go on site sofworld.org
in the exam of cyber olympiad
http://pdfdatabase.com/cbse-class-7th-question-paper-maths.html
If you are looking for class 4,5 and 6, you can use ExamHelp website for generating random question papers for Maths Olympiad. Questions on this site never repeat, so you can generate as many practice papers you want.
nikithaonline.com
i want question & answer in 8th class. then i want to give test online paper
7 class question papers
8th class "MATHEMATICS" Quarterly question paper.
You can prepare for Maths and Science Olympiad by logging / taking subscription in the Reflective Learn website. They provide sample and model test paper and prepare you to competitive exams like NSO, IMO and other Olympiad exams.
They contain harshly difficult mathematical problems which require you to think 'outside the box'.
economics
in class listen well and if you get the question paper simly search in net