Write a function that will multiply every prime number in the array or matrix by two, leaving all other numbers the same, and return that de-primed array or matrix. One will be treated as prime in this problem.
One in not prime!!!
And therefore should not become de-primed.
The Tower of Hanoi
Number of 1s in a binary string
Permute diagonal and antidiagonal
Generate this matrix
MATLAB Basic: rounding II
Combined Ages 2 - Symmetric, n ≥ 3
Rule of mixtures (composites) - other bound
5th Time's a Charm
Divisible by 7
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