Daily Brain Teasers for Sunday, 13 April 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If ac6b7 + 1372a = 10a416 find number abc. Multiple solutions may exist.
#brainteasers #math
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.
#brainteasers #mastermind
Calculate the number 400
NUMBERMANIA: Calculate the number 400 using numbers [6, 6, 9, 8, 67, 264] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Requesting A Three Day Pass
An Israeli soldier who just enlisted asked the Commanding Officer for a 3-day pass.
The CO says "Are you crazy? You just join the Israeli army, and you already want a 3-day pass? You must do something spectacular for that recognition!"
So the soldier comes back a day later in an Arab tank!
The CO was so impressed, he asked "How did you do it?"
"Well, I jumped in a tank, and went toward the border with the Arabs. I approached the border, and saw an Arab tank. I put my white flag up, the Arab tank put his white flag up. I said to the Arab soldier, "Do you want to get a three-day pass? So we exchanged tanks!"
The CO says "Are you crazy? You just join the Israeli army, and you already want a 3-day pass? You must do something spectacular for that recognition!"
So the soldier comes back a day later in an Arab tank!
The CO was so impressed, he asked "How did you do it?"
"Well, I jumped in a tank, and went toward the border with the Arabs. I approached the border, and saw an Arab tank. I put my white flag up, the Arab tank put his white flag up. I said to the Arab soldier, "Do you want to get a three-day pass? So we exchanged tanks!"
MAGIC SQUARE: Calculate A-B+C
The aim is to place the some numbers from the list (12, 13, 15, 16, 23, 26, 61, 63, 68, 69, 79, 88) 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.
#brainteasers #math #magicsquare
Dr. Thomas BeddoesBorn 13 Apr 1760; died 24 Dec 1808 at age 48. English physician and philosopher who, in the late 1780s, began to explore the potential medical uses of gases. He founded the Pneumatic Medical Institute in Bristol (1798). The institute offered oxygen therapy, but because Beddoes' assumption–that some diseases would naturally respond to a higher or lower oxygen concentration–was incorrect, the treatments offered no real clinical benefit. However, Humphry Davy, launched his chemistry career there, researching nitrous oxide (“diminished nitrous air”). Beddoes published Hygeia: Or Essays Moral and Medical, on the Causes Affecting the Personal State of the Middling and Affluent Classes, 3 vols. (1802), a formal regimen for daily diet, exercise, and sleep for illness prevention. |
Find number abc
If 4a9cc + 991b4 = 14a111 find number abc. Multiple solutions may exist.
#brainteasers #math
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.
#brainteasers #mastermind
Calculate the number 454
NUMBERMANIA: Calculate the number 454 using numbers [1, 6, 1, 8, 18, 158] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If aa3bc - bac55 = 195cb find number abc. Multiple solutions may exist.
#brainteasers #math
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.
#brainteasers #mastermind
Calculate the number 8404
NUMBERMANIA: Calculate the number 8404 using numbers [8, 9, 4, 4, 65, 949] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
