Raise me none, and I'm unbeaten. Raise me once, I am as well. Raise me thrice, and I am eaten. All said right, but wrongly spelled. Who am I?
How can you get 4 from 5?
8, 5, 4, 9, 1, 7, 6, 3, 2 These numbers are in a specific order. What is the pattern?
Five times the difference of twice a number and three, decreased by the sum of this number and eight, equals thirteen.
The ages of a father and son add up to 66. The father's age is the son's age reversed. How old could they be?
51 and 15, 24 and 42, 60 and 6
Find the four-digit number in which the first digit is one-fourth of the last digit, the second digit is 6 times the first digit, and the third digit is the second digit plus 3.
If you multiply this number by any other number, the answer will always be zero. What number is this?