24. Dates can be written in the form DD.MM.YYYY. For example, today's date is 17.03.2016. A date is called 'surprising' if all 8 digits in its written form are different. In what month will the next surprising date occur?
A March
B June
C July
D August
E December
24. B The smallest possible first digit in the year is 2. This eliminates December from the month, leaving only months that start with 0 , or 10 ( 11 cannot be used because it has a repeated digit). So we will definitely use 0 for the month. Not using 0 or 2 for a day leaves us with 13 to 19 , or 31 , all of which use a 1 . Since we are using 0 and 1 for the month and day, the earliest year we could have is 2345 . The earliest month is then 06 , and the earliest day that can be made is 17 . This gives 17.06.2345. So the month is June.