Football Team Frenzy: Can You Solve It?
Imagine being the coach of a football team with 11 players, each wearing a unique number from 1 to 11. The goal? Arrange your team into defenders, midfielders, and forwards so that the sum of their shirt numbers falls perfectly divisible by 11.
Sounds simple, but can it be done? We're on the lookout for an example or proof that proves it's impossible. Share your ideas and see if you can crack this football puzzle!
Moving on to another 11-themed challenge: let's examine the 11 times table. When we first learn our multiplication tables, 11 x 1 = 11, 11 x 2 = 22, and 11 x 3 = 33 come to mind. However, as we progress to higher numbers, the pattern becomes more complex.
If you continue multiplying by 11, up to 99, will all answers remain palindromes? At least one more example comes to mind: 11 x 56 = 616. So, if we keep going, how many more palindromic answers can we expect?
Lastly, have you ever wondered about a lesser-known rule for divisibility by 11? It's surprisingly simple: add the digits alternately with plus and minus signs (starting with a plus), and check if the result is a multiple of 11. Using each digit from 0 to 9 exactly once, what's the largest possible 10-digit number that can be divisible by 11?
Take a break while we work on our solutions β don't worry, we won't spoil any puzzles just yet!
Imagine being the coach of a football team with 11 players, each wearing a unique number from 1 to 11. The goal? Arrange your team into defenders, midfielders, and forwards so that the sum of their shirt numbers falls perfectly divisible by 11.
Sounds simple, but can it be done? We're on the lookout for an example or proof that proves it's impossible. Share your ideas and see if you can crack this football puzzle!
Moving on to another 11-themed challenge: let's examine the 11 times table. When we first learn our multiplication tables, 11 x 1 = 11, 11 x 2 = 22, and 11 x 3 = 33 come to mind. However, as we progress to higher numbers, the pattern becomes more complex.
If you continue multiplying by 11, up to 99, will all answers remain palindromes? At least one more example comes to mind: 11 x 56 = 616. So, if we keep going, how many more palindromic answers can we expect?
Lastly, have you ever wondered about a lesser-known rule for divisibility by 11? It's surprisingly simple: add the digits alternately with plus and minus signs (starting with a plus), and check if the result is a multiple of 11. Using each digit from 0 to 9 exactly once, what's the largest possible 10-digit number that can be divisible by 11?
Take a break while we work on our solutions β don't worry, we won't spoil any puzzles just yet!