Figurate number triangle
Pi Estimate 1
Detect a number and replace with two NaN's
Find out sum of prime number till given number
Rotate matrix by coloumns
Find the efficiency
Decipher the number 4 - 3 keys - order [1 2 3 2 1 2 3 ......]
Cipher or decipher the number according to the second input - 10 keys
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