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The Most Difficult Tasks (page 490)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 4891 to 4900. |
Which is a winning combination of digits?
. Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.','/archive/2021/05/18/mastermind-1621296301.png','/Which-is-a-winning-combination-of-digits/6908'))
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. Find number abc
)
If 41a4b + 5a720 = 950cb find number abc. Multiple solutions may exist. Find number abc
)
If 9ca9a - a0b0b = 1cb9b find number abc. Multiple solutions may exist. 
Horse Race
A champion jockey is about to enter an important race on a new horse. The horse's trainer meets him before the race and says, "All you have to remember with this horse is that every time you approach a jump, you have to shout, 'ALLLLEEE OOOP!' really loudly in the horse's ear. Providing you do that, you'll be fine."
The jockey thinks the trainer is mad but promises to shout the command. The race begins and they approach the first hurdle. The jockey ignores the trainer's ridiculous advice and the horse crashes straight through the center of the jump.
They carry on and approach the second hurdle. The jockey, somewhat embarrassed, whispers 'Aleeee ooop' in the horse's ear. The same thing happens--the horse crashes straight through the center of the jump.
At the third hurdle, the jockey thinks, "It's no good, I'll have to do it," and yells, "ALLLEEE OOOP!" really loudly. Sure enough, the horse sails over the jump with no problems. This continues for the rest of the race, but due to the earlier problems the horse only finishes third.
The trainer is fuming and asks the jockey what went wrong. The jockey replies, "Nothing is wrong with me - it's this horse. What is he - deaf or something?"
The trainer replies, "Deaf?? DEAF?? He's not deaf--he's BLIND!"
Which is a winning combination of digits?
. Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.','/archive/2020/12/12/mastermind-1607731502.png','/Which-is-a-winning-combination-of-digits/6751'))
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. 
Remove 3 letters from this seq...
 to reveal a familiar English word.','/archive/2020/06/25/6549.png','/Remove-3-letters-from-this-seq---/6549'))
Remove 3 letters from this sequence (BLIIGGKER) to reveal a familiar English word. Find the right combination
. Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.','/archive/2020/05/12/mastermind-1589241901.png','/Find-the-right-combination/6446'))
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. Find number abc
)
If b87ca - 3aa48 = 3bc04 find number abc. Multiple solutions may exist. Find the 8 letters word
)
Find the 8 letters word. Word may go in all 8 directions. Find number abc
)
If a5ab1 + 2175c = 107c47 find number abc. Multiple solutions may exist. Remove 5 letters from this seq...
 to reveal a familiar English word.','/archive/2020/04/13/6336.png','/Remove-5-letters-from-this-seq---/6336'))
Remove 5 letters from this sequence (CAELAIMIZITYY) to reveal a familiar English word. 
