Six "Mass Cash" tickets from the same shop winning the $100,000 jackpot on the same day may appear fishy, but the lottery says it's not unusual.

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The $100,000 prize was won on Monday by seven "Mass Cash" tickets. Six of them were sold at Quincy's Super Petroleum.

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“offers the best odds of winning $100,000 of any of our games,” according to the lottery.

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The winning "Mass Cash" ticket was purchased at Am-pm Convenience in Hyannis, which is situated at 489 Bearses Way.

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A $100,000 reward was also won in the game "Millions." It was available at Carver Main Street Liquors in Carver.

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A $50,000 Powerball jackpot was also won on a ticket purchased at Sullivan's Pharmacy & Medical Supply in Roslindale.

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On Monday, more than 770 winning lottery tickets worth at least $600 were claimed or sold throughout Massachusetts, with 21 in Springfield and 23 in Worcester.

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This year's greatest lottery prize in Massachusetts was $16.35 million, won as part of the game Megabucks Doubler.

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This year, two $15 million rewards were also won in the Commonwealth.

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