If give my function a x value it will give me a y value, so find the secret of it:
input x=23 ---- >>> output y=100
input x=21 ---- >>> output y= 77
Hint: use tags
Summing Digits within Text
Back to basics 21 - Matrix replicating
Add two numbers
Sum the real and imaginary parts of a complex number
Find my secret function I
Find the minimal value in N*N Matrix
Is it a mail?
Stop a ZigZag scanning N*N Matrix at any diag you want
Divisible by 21
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