Showing what's behind the curtain

Discover the largest product of thirteen consecutive digits in the 1000-digit number.

Find the first ten digits of the sum of one-hundred 50-digit numbers.

Sum of the digits in 2^1000.

Count how many letters would be needed to write all the numbers in words from 1 to 1000.

Find the sum of the digits in 100!

Calculate the total of all the name scores in the file of first names.

Count how many ‘triangle words’ a list of common English words contain.

Compare hands in a game of poker and determine a winner

Using a brute force attack, decrypt the cipher using XOR encryption

Calculate characters saved by expressing Roman numerals in minimal form.