#21 Six weeks of seconds
Which number is bigger:
The product of all the whole numbers from 1 to 10 inclusively, sometimes written as 10 factorial or 10!
or
The number of seconds in six weeks?
Can you work it out without resorting to a calculator?
Answer next week
#20 Caesar cipher
Solution
You can get from 3 to 47 using the Caesar cipher – the method that Julius Caesar used to encrypt messages, by shifting letters a fixed number of places up the alphabet.
If you shift the word THREE by four places, you get XLVII, which is 47 in…
