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World Community Grid Forums
Category: Community
Forum: Chat Room
Thread: Weekend Puzzles |
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Thread Status: Active Total posts in this thread: 361
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Bryn Mawr
Senior Cruncher Joined: Dec 26, 2018 Post Count: 384 Status: Offline Project Badges: 
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Done, thank you.
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7844 Status: Offline Project Badges: 
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Tried several things, got several answers, pretty sure none are correct.
----------------------------------------Cheers
Sgt. Joe
*Minnesota Crunchers* |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges: 
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Dear weekend quiz participants, especially alanb1951, Bryn Mawr and Sgt.Joe,
----------------------------------------This was the quiz: 2 → %2% → 4 What is the value of the question mark? The answer: 5 The notation %figure% means to multiply the preceding number by that figure. The notation #figure# means to add the preceding number by that figure. The notation &figure& means to divide the preceding number by that figure. Applying what we have learnt, 4 → %6% → &8& → #2# yields: ((4 × 6) / 8) + 2 = 5. Thanks for participating! Adri [Edit 1 times, last edit by adriverhoef at Nov 19, 2025 12:31:22 PM] |
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alanb1951
Veteran Cruncher Joined: Jan 20, 2006 Post Count: 1316 Status: Offline Project Badges: 
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Glad to see the answer was 5 -- as that had already appeared as the result of one of the examples I was a little surprised when I got that :-)
Neat explanation too -- it reads like a version of my solution notes [expertly] edited for brevity! Yet again, thanks for an interesting puzzle. Cheers - Al. |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges:
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This weekend's puzzle.
----------------------------------------A software tester is being asked to enter two numbers between 1 and 21 — so there are 19 possibilities(*) — into a coding machine. This should be done repeatedly. The machine always follows the same procedure and returns two numbers for each pair of input. The tester used two different pairs of input each time. After four times the results are as follows: Output#1: 63, 2 Output#2: 26, 11 Output#3: 88, 3 Output#4: 21, ? What is the last result? (i.e. the value of the question mark) Adri (*) The set of all integers starting from 2 and ending at 20 is implied. [Edit 1 times, last edit by adriverhoef at Nov 22, 2025 10:20:59 AM] |
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alanb1951
Veteran Cruncher Joined: Jan 20, 2006 Post Count: 1316 Status: Offline Project Badges:
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Adri,
Thanks for this, which made a nice break from trying to interpret the latest Operational Status update :-) Solved your puzzle, but still in the dark about MCM1 result processing!... Cheers - Al. |
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Bryn Mawr
Senior Cruncher Joined: Dec 26, 2018 Post Count: 384 Status: Offline Project Badges:
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I have a mechanism and an answer that I think is unique so I’ll say done and thank you.
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7844 Status: Offline Project Badges:
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I have a solution which I am pretty sure is correct. I found this puzzle much easier than the last one, because it took less than a minute to get an answer.
----------------------------------------Cheers
Sgt. Joe
*Minnesota Crunchers* |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges:
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Dear weekend quiz participants, especially alanb1951, Bryn Mawr and Sgt.Joe,
----------------------------------------This was last weekend's puzzle: A software tester is being asked to enter two numbers between 1 and 21 into a coding machine a number of times. The machine always follows the same procedure and returns two numbers for each pair of input. The tester used two different pairs of input each time. After four times the results are as follows: Output#1: 63, 2 Output#2: 26, 11 Output#3: 88, 3 Output#4: 21, ? Answer: 4 The coding machine always returns the product of the two entered numbers followed by the difference of the pair. Input#1: 7 and 9, product 63, difference 2 Input#2: 2 and 13, product 26, difference 11 Input#3: 8 and 11, product 88, difference 3 Input#4: 3 and 7, product 21, difference 4 Adri [Edit 1 times, last edit by adriverhoef at Nov 26, 2025 2:07:46 PM] |
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adriverhoef
Master Cruncher The Netherlands Joined: Apr 3, 2009 Post Count: 2346 Status: Offline Project Badges:
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Not a weekend puzzle, but a riddle:
You can draw a triangle with three lines. Now draw a square with three lines. (Thus not four lines.) Adri |
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