Charlie's Puzzle

Charlie's Puzzle

One of my ex students, Charlie Shave sent me a series of puzzles this weekend. Each one gives a 4 digit number, with the fourth puzzle being split into four further puzzles, each of which gives a 1 digit number.

I popped them in Google Drive, so here is the link.

I'm still working my way through and any help is appreciated.

God's Number

God's Number

Heron's Formula

Heron's Formula

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