World's richest Indian in Forbes magazine, China-Australia coal deal

Who retained his title of being the world's richest Indian in Forbes magazine's annual list of the world's richest people?
Mukesh Ambani

Which Chinese subsidiary company took over Australia's Gloucester Coal miner in a multi-billion dollar deal?
Yancoal

Name the music director - king of soft melodies who passed away recently.
Ravi Shankar Sharma

Name the BPO firm acquired by Mahindra Satyam for $27 million.
vCustomer biz

Who has been appointed as head coach of the Pakistan cricket team?
Dav Whatmore