My Nephew Brought Home This Menacing Maths Problem
Junaid Mubeen
51315

I don’t understand all that fuss about this problem. Just cast out the nines: 1234 leaves a remainder of 1, just like any permutation of its digits. Summing four such permutations will leave a remainder of 4, while 9000 has a reminder of 0. Are you saying that an eight grader does not yet know how to cast out nines?

One clap, two clap, three clap, forty?

By clapping more or less, you can signal to us which stories really stand out.