Ganguly, who scored 66 in his team's below-par batting performance against Bangladesh, struck two sixes and three fours in his 114-ball knock.
He looked set to become the first batsman to score five centuries in the World Cup when he was stumped attempting a big shot. Australians Ricky Ponting and Mark Waugh, and Indian Sachin Tendulkar are others with four hundreds.
India, keeping an eye on the net run-rate after losing their opening match, sent in big-hitters Mahendra Dhoni and Yuvraj ahead of Tendulkar. The move paid off as runs came thick and fast.
The Indian innings contained 18 sixes, with Yuvraj hitting seven in his 46-ball knock and Tendulkar four in his 29-ball innings.
India were in a must-win situation after being upset by Bangladesh in their previous game, but found the going easy against Bermuda who looked clueless after early second-over celebrations.
New-ball bowler Malachi Jones, at 17 one of the youngest cricketers in the tournament, struck with his first delivery when he had opener Robin Uthappa caught by burly Dwayne Leverock, who dived to his right to hold the ball.
The Bermudan cricketers celebrated the early success as if they had taken more than just a wicket. But the joy was short-lived as their attack was soon put to the sword by Sehwag.
RSS