It's very sad that there is no matlab function "npermsk".
Not work for R is long, and k is small.
For example, R = 1:100, k = 2.
@li haitao, the max digital is 9. If length of R great than 10, it is another problem. I think you can submit a problem like this but larger R.
@ Binbin Qi, You're right.
Magic is simple (for beginners)
MATLAB Basic: rounding III
5 Prime Numbers
Number of Even Elements in Fibonacci Sequence
With apologies to William Blake
Pandigital Multiples of 11 (based on Project Euler 491)
Diophantine Equations (Inspired by Project Euler, problem 66)
Lowest sum from a group of digits
Community Problem 500!
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