Take three lowercase letters and print out binary.

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

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

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

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.

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

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