If a number is divisible by the number formed by the first and last digit of that number then it is defined as a gapful number.
Find the number of gapful numbers up to n.
How long is the longest prime diagonal?
Getting the indices from a matrice
07 - Common functions and indexing 4
generate the matrix
Take a binary number as input,rearrange it in any manner such that its value is greater than the original one.output should be all the possible values in decimal.
Check Digit - 01
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