Brain Teasers
Birthday Number
A "birthday number" is defined as follows: add all digits of the month and day of the birthday. For example, November 24th has "birthday number" 1+1+2+4=8.
What are the birthdays that share the second smallest birthday number?
What are the birthdays that share the second smallest birthday number?
Hint
What is the smallest birthday number?Answer
The smallest birthday number is 2, as in 1.1 and 10.1.The second smallest birthday number is 3, as in 1.2, 1.11, 1.20, 2.1, 2.10, 10.2, 10.11, 10.20, 11.1, 11.10.
Hide Hint Show Hint Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments hidden to avoid spoilers.
Follow Braingle!