Count down, first by 1, then by 2, then by 3 and so on (one more each time), as in this example: 15, 14, 12, 9, 5, 0. Which of these numbers will finish exactly at zero?
In a race of 16 horses numbered 1 to 16, I missed the finish. Six friends told me about the winner's number: A: it was even. B: it was odd. C: it was prime. D: it was a square number. E: it had 2 digits. F: it was between 6 and 12. Only four of them told the truth. Which number won?
Take two numbers. If we subtract half of the smaller number from each of them, the result for the larger number is three times the result for the smaller number. How many times as large as the smaller number is the larger number?