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The Most Difficult Tasks (page 7)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 61 to 70. |
Find number abc
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If ab12c + ba6b3 = 1b3cc0 find number abc. Multiple solutions may exist. What a winning 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/2026/07/14/mastermind-1783987501.png','/What-a-winning-combination/8774'))
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. Calculate the number 2473
. Each of the numbers can be used only once.','/archive/2026/07/13/numbermania-1783901101.png','/calculate-the-number-2473/8773'))
NUMBERMANIA: Calculate the number 2473 using numbers [7, 6, 5, 4, 29, 960] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. 
10 funny one-liners from North West comedians
"I think animal testing is a terrible idea - they get all nervous and give the wrong answers." - Peter Kay
"A cement mixer collided with a prison van on the Kingston Bypass. Motorists are asked to be on the lookout for 16 hardened criminals." - Peter Kay
"So this bloke says to me, 'Can I come in your house and talk about your carpets?' I thought, "'That's all I need - a Je-hoover's witness.'" - Peter Kay
"So a lorry-load of tortoises crashed into a trainload of terrapins, I thought, 'That's a turtle disaster.'- Peter Kay
"We've had to get a live-in nanny, 'cos that dead one wasn't working out." - Lee Mack
"I’m in a relationship at the moment. Sorry girls... it’s going to have to be your place." - Lee Mack
"I went to see a handwriting expert last week, she could tell I was laid-back, gullible and well-off just from a signature on a cheque." - Lee Mack
"I have kleptomania. But when it gets bad, I take something for it." - Ken Dodd
"My Dad always knew I was going to be a comedian. When I was a baby he said, 'Is this a joke?'" - Ken Dodd
"Five out of every three people have trouble understanding fractions." - Ken Dodd
Find number abc
)
If 8cb7b - b1cac = a1a4a find number abc. Multiple solutions may exist. 
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/2026/07/11/mastermind-1783728301.png','/Which-is-a-winning-combination-of-digits/8771'))
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. Calculate the number 3015
. Each of the numbers can be used only once.','/archive/2026/07/10/numbermania-1783641901.png','/calculate-the-number-3015/8770'))
NUMBERMANIA: Calculate the number 3015 using numbers [8, 9, 2, 7, 10, 317] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
)
If b2b5a + aabc9 = 151307 find number abc. Multiple solutions may exist. What a winning 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/2026/07/07/mastermind-1783382702.png','/What-a-winning-combination/8768'))
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. Calculate the number 3990
. Each of the numbers can be used only once.','/archive/2026/07/06/numbermania-1783296301.png','/calculate-the-number-3990/8767'))
NUMBERMANIA: Calculate the number 3990 using numbers [2, 7, 7, 2, 95, 423] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
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If c1624 + 1b6b4 = 10c2ca find number abc. Multiple solutions may exist. 
