Someone from big C(M&A division?) typically calls you and says "We would like to explore if it is possible to we can work together". As part of it, they may ask

Someone from big C(M&A division?) typically calls you and says "We would like to explore if it is possible to we can work together". As part of it, they may ask you to do a small project for them, asap (This is to test your speed of execution. I believe it happened in case of Google Docs). If they like it, they will ask for company financials/Growth numbers etc Source: Reading many articles