Just take any given string and output it in reverse, pretty easy, right?

Take three lowercase letters and print out binary.

Take a list of integers and print it after sorting it in descending order.

Start with one Fibonacci sequence number, then calculate more from there.

Given a number, find out if the sum of the digits is even or odd.

Take a roman numeral(<1000 in value) and print its corresponding value in the decimal system of numbers.

Take an invalid JSON string and figure out where the errors are and make it valid.

Take a sentence/phrase in pig latin, translate it to English.

Given a string with multiple words, find the most common character.

Given two strings of equal length, figure out if one is a scramble of the other.

Take a string of comma separated numbers and print out the sum.

Given a string with multiple words, return the longest word.

Merge two arrays in a zipper-like fashion.

Take a string of numbers and output the one which appears the most.