Daily Brain Teasers for Wednesday, 20 September 2023
|
puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If 84bc5 + c26aa = 1aa0a2 find number abc. Multiple solutions may exist.
Which is a winning combination of digits?
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 6715
NUMBERMANIA: Calculate the number 6715 using numbers [4, 9, 6, 8, 69, 567] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Train Test
Tom is applying for a job as a signalman for the local railroad and is told to meet the inspector at the signal box.
The inspector decides to give Tom a pop quiz, asking: "What would you do if you realized that two trains were heading towards each other on the same track?"
Tom says: "I would switch one train to another track."
"What if the lever broke?" asks the inspector.
"Then I'd run down to the tracks and use the manual lever down there", answers Tom.
"What if that had been struck by lightning?" challenges the inspector.
"Then," Tom continued, "I'd run back up here and use the phone to call the next signal box."
"What if the phone was busy?"
"In that case," Tom argued, "I'd run to the street level and use the public phone near the station".
"What if that had been vandalized?"
"Oh well," said Tom, "in that case I would run into town and get my Uncle Leo".
This puzzled the inspector, so he asked, "Why would you do that?"
"Because he's never seen a train crash."
Find number abc
If b8acb + 9cac6 = bb0647 find number abc. Multiple solutions may exist.
First circular airplane flightIn 1904, the first circular flight in an airplane was made by Orville Wright at Huffman Prairie, near Dayton, Ohio. He travelled about 4,080-ft (1244-m) in about 1½ minutes in the Flyer II. The Wright brothers' first Flyer which made the historic flight and three more on 17 Dec 1903 in North Carolina, had been overturned by the wind and damaged after those flights. The Wrights chose not to repair it but to start with a new, heavier and stronger machine with a more powerful motor, constructed where it would be used, at the Huffman Prairie Flying Field. On 15 Sep 1904, Wilbur was able to fly a half-circle. As the brothers improved the control of their airplane's flight, a few days later, a complete circuit was accomplished.« |
Which is a winning combination of digits?
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 7649
NUMBERMANIA: Calculate the number 7649 using numbers [6, 6, 8, 9, 65, 505] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
MAGIC SQUARE: Calculate A-B+C
The aim is to place the some numbers from the list (1, 18, 20, 23, 27, 29, 32, 39, 41, 43, 46, 74) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A-B+C.
Find number abc
If c70bb + 9abbb = aa873c find number abc. Multiple solutions may exist.
What a winning combination?
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 3518
NUMBERMANIA: Calculate the number 3518 using numbers [3, 7, 4, 8, 24, 333] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
