Advanced level school Python programming. need helps.

The base-6 system, also known as the senary or hexary system, is a numeral system that uses six symbols to represent numbers: 0,1,2,3,4, and 5 . This is a popular system due to its divisibility. (a) Using pseudocode, write a function dec2sen(n) that takes in a decimal number n and returns its equivalent senary (base-6) representation as a string. (b) Give the senary-string for the decimal value of 100 . (c) Convert '1234' from senary to decimal. The base- 36 system, which uses the Arabic numerals 0-9 and the latin letters A-Z, is commonly used by URL redirection systems like TinyURL. The base-36 system is closely related to the base-6 system. (d) Explain why the base-36 system is closely related to the base- 6 system