'India's 7,730 super rich collectively own $ 925 bn'
Over 4 pc of world's billionaires Indians: Forbes
Britain has higher rate of self-made rich than US
50 Indian billionaires in global richest club
Mexican tycoon world's richest man
Bidder pays $1.68 mn to dine with Warren Buffet
India to have most billionaires by 2017: Forbes' poll
London attracts world's super rich