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GCHQ Puzzle Challenge 5

Pardon my French! Not sure how to rate this one, but given some of the anxiety caused by last week, perhaps it is best to call it a 2! Once you have solved it, post your time and solution on the Forum, we will delete the solution and post the time if you have it right.

 · Harry

GCHQ Puzzle Solution 4

(The power of the) Ellipsis The next three terms in the following sequence: 3,3,10,11,11,18,10,10,17, … are ……. either 18, 18, 25, or, if you are a little more modern, then 10, 10, 17. The reason is that the numbers represent the number of letters in the powers of ten: One, Ten, One Hundred, One Thousand, Ten Thousand, One Hundred Thousand, One Million, Ten Million, One Hundred Million, followed by One Thousand Million, Ten Thousand Million, One Hundred Thousand Million OR … Read on

 · Harry

GCHQ Puzzle Challenge 4 – Harry’s Hint

(The power of the) Ellipsis Find the next three terms in the following sequence: 3,3,10,11,11,18,10,10,17, … After the terrors of last week’s challenge, this one should hopefully be a bit easier. Once you have solved it, post your time and solution on the Forum, we will delete the solution and post the time if you have it right.

 · Harry

GCHQ Puzzle Challenge 4

Ellipsis Find the next three terms in the following sequence: 3,3,10,11,11,18,10,10,17, … After the terrors of last week’s challenge, this one should hopefully be a bit easier. Once you have solved it, post your time and solution on the Forum, we will delete the solution and post the time if you have it right.

 · Harry