Daily Brain Teasers for Monday, 25 April 2022
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 817
NUMBERMANIA: Calculate the number 817 using numbers [8, 3, 2, 9, 93, 551] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 9a9c0 + 4983b = 14ab5b 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.
Credit Cards
Abe and Esther are flying to Australia for a two week vacation to celebrate their 40th anniversary.
Suddenly, over the public address system, the Captain announces, "Ladies and Gentlemen, I am afraid I have some very bad news. Our engines have ceased functioning and we will attempt an emergency landing.
Luckily, I see an uncharted island below us and we should be able to land on the beach. However, the odds are that we may never be rescued and will have to live on the island for the rest of our lives!"
Thanks to the skill of the flight crew, the plane lands safely on the island. An hour later Abe turns to his wife and asks, "Esther, did we pay our $5,000 PBS pledge check yet?"
No, sweetheart," she responds.
Abe, still shaken from the crash landing, then asks, "Esther, did we pay our American Express card yet?"
"Oh, no! I'm sorry. I forgot to send the check," she says.
"One last thing, Esther. Did you remember to send checks for the Visa and MasterCard this month?" he asks.
"Oh, forgive me, Abie," begged Esther. "I didn't send that one, either."
Abe grabs her and gives her the biggest kiss in 40 years.
Esther pulls away and asks him, "What was that for?"
Abe answers, "They'll find us!"
Calculate the number 3811
NUMBERMANIA: Calculate the number 3811 using numbers [9, 9, 1, 2, 40, 374] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
François HennébiqueBorn 25 Apr 1842; died 20 Mar 1921 at age 78.French engineer who was an important leader in experimenting with various ways of reinforcing concrete with iron and steel. At the Paris Exposition of 1867, Hennebique saw Joseph Monier's tubs and tanks built of concrete reinforced with wire mesh, and began experimenting with ways to apply this new material to building construction, setting up his own firm (1867). First using reinforced-concrete floor slabs (1879), he progressed to a complete building system, patented 1892, using his invention of a method using hooked connections on reinforcing bars. Hennébique introduced his techniques into Britain when he was commissioned to build a new flour mill in Swansea (completed 1898). This was the first multistorey reinforced concrete building in Britain. |
MAGIC SQUARE: Calculate A+B-C
The aim is to place the some numbers from the list (3, 12, 15, 16, 22, 24, 25, 26, 39, 42, 43, 58) 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 a4c64 + ba3a4 = c29ac8 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 787
NUMBERMANIA: Calculate the number 787 using numbers [4, 7, 4, 7, 10, 764] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 857ac + 6279a = cb852b 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.
