Daily Brain Teasers for Sunday, 24 September 2023
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If ac506 + 3c366 = 7ab7c 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 4964
NUMBERMANIA: Calculate the number 4964 using numbers [6, 5, 9, 3, 27, 922] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Immaculate Misconception
A woman starts dating a doctor. Before too long, she becomes pregnant and they don't know what to do. About nine months later, just about the time she is going to give birth, a priest goes into the hospital for a prostate gland infection.
The doctor says to the woman: "I know what we'll do. After I've operated on the priest, I'll give the baby to him and tell him it was a miracle."
"Do you think it will work?" she asks.
"It's worth a try," he says.
So, the doctor delivers the baby and then operates on the priest. After the operation he goes in to the priest and says: "Father, you're not going to believe this."
"What happened?" asks the priest.
"You gave birth to a child!"
"But that's impossible!" says the priest.
"I just did the operation," insists the doctor. "It's a miracle! Here's your baby."
About 15 years go by, and the priest realizes he must tell his son the truth. One day, he sits the boy down and says: "Son, I have something to tell you. I'm not your father."
The son says: "What do you mean, you're not my father?"
The priest replies: "I am your mother. The archbishop is your father."
MAGIC SQUARE: Calculate A*B+C
The aim is to place the some numbers from the list (13, 14, 16, 20, 21, 23, 42, 49, 50, 52, 58, 79) 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.
Largest ozone holeIn 2006, NASA recorded the largest ozone hole in the atmosphere to date. From 21-30 Sep the average area was 10.6 million square miles, as measured by the Ozone Monitoring Instrument on NASA's Aura satellite. At the worst point, a record low of 1.2 Dobson Units compared to a 125 DU non-hole reading. For the past several decades, each year during the Southern Hemisphere Spring (Northern Hemisphere Autumn) chemical reactions due to chlorine and bromine man-made compounds in the atmosphere cause the destruction of ozone in the stratosphere over the southern polar region. This is a concern because this ozone, a very active triatomic form of oxygen (O3), absorbs the harmful ultraviolet-B rays (UV-B) present in light from the sun that damages plant and animal tissues, including humans.«[In the image, blue and purple shows where there is least ozone, and yellow and reds where there is more.] |
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.
Find number abc
If b8acb + 9cac6 = bb0647 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 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.
