Daily Brain Teasers for Sunday, 12 December 2021
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If 92067 - ccb66 = b8b0a find number abc. Multiple solutions may exist.
Find the right 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 1785
NUMBERMANIA: Calculate the number 1785 using numbers [5, 6, 5, 9, 43, 342] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The Typewriter
They had been up in the attic together doing some cleaning. The kids uncovered an old manual typewriter and asked, 'Hey Mom, what's this?'
'Oh, that's an old typewriter,' she answered, thinking that would satisfy their curiosity.
'Well what does it do?' they asked.
'I'll show you,' she said and returned with a blank piece of paper. She rolled the paper into the typewriter and began striking the keys, leaving black letters of print on the page.
'WOW!' they exclaimed, 'That's really cool.! But how does it work like that? Where do you plug it in?'
'There is no plug,' she answered. 'It doesn't need a plug.'
'Then where do you put the batteries?' they persisted.
'It doesn't need batteries either.' she continued.
'Wow! This is so cool!' they exclaimed. 'Someone should have invented this a long time ago!'
MAGIC SQUARE: Calculate A+B-C
The aim is to place the some numbers from the list (14, 16, 22, 32, 34, 40, 43, 45, 51, 89) 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.
Charles Alexandre LesueurDied 12 Dec 1846 at age 68 (born 1 Jan 1778).French naturalist and artist who is remembered for high quality natural history illustrations. He travelled to Australia under Nicolas Baudin on a scientific expedition (1800-04) and returned to France with collection of over 100,000 zoological specimens, including some 2,500 new species. In 1815, he began an association with William Maclure on a scientific excursion to the principal islands of the Lesser Antilles to make a study of the geology, followed by further work in the U.S. revising Maclure's geological maps. From 1816-37, while living in the U.S., he explored the Mississippi Valley. Lesueur followed a particular interest in ichthyology. He made the first scientific study of the archaeological prehistoric mounds in vicinity of New Harmony, Indiana. |
Find number abc
If 9baa1 - a3acc = 2502a find number abc. Multiple solutions may exist.
Find the right 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 4248
NUMBERMANIA: Calculate the number 4248 using numbers [2, 8, 2, 5, 32, 501] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 70c93 - 27b17 = 4337a 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 300
NUMBERMANIA: Calculate the number 300 using numbers [3, 4, 2, 8, 43, 173] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
