Short difficult simple riddles

Every casino in the world would go bankrupt without a house limit on stakes. Without it, gamblers would keep doubling their stakes until they won. No matter how bad a losing streak they were on, they would eventually win. For more information, search: Martingale

7 up cans.

Tomorrow.

I'm a Riddle.

111111111 Explanation: It's a maths magical square root series as : Square root of number 121 is 11 Square root of number 12321 is 111 Square root of number 1234321 is 1111 Square root of number 123454321 is 11111 Square root of number 12345654321 is 111111 Square root of number 1234567654321 is 1111111 Square root of number 123456787654321 is 11111111 Square root of number 12345678987654321 is 111111111 (answer)

Asteroids.

At that moment, the time and day could be written as 12:34, 5/6/78.

6 - the number of letters in the month august; (January has 7 letters, February has 8 etc.)

Void

Half way. If you go in any further, you’d be running OUT of the woods.