Did you solve it? The club sandwich problem
by Alex Bellos from on (#4WMXM)
The solutions to today's puzzles
Earlier today I set the following two puzzles about number sandwiches.
1) A number sandwich is a line of digits such that there is one digit sandwiched between the 1s, two digits sandwiched between the 2's, three digits sandwiched between the 3's, and so on. For example, 312132 is a number sandwich with the digits 1,2 and 3
Continue reading...