Test Preparation on CSIR Test Prep For Mathematical Science Paper-2

Arun, Kamal and Vinay invested Rs. 8000, Rs. 4000 and Rs. 8000 respectively in a business. Arun left after six months. If after eight months, there was a gain of Rs. 4005, then what will be the share of Kamal?

What was the day of the week on 28th May 2006?

If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, what is the compound interest on the same at the same rate and for the same time?

The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?