Daily Brain Teasers for Friday, 06 August 2021
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 4730
NUMBERMANIA: Calculate the number 4730 using numbers [3, 2, 7, 8, 19, 917] 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 (2, 4, 12, 21, 23, 26, 30, 31, 64, 70, 72, 80, 90) 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 a292c + 4ba7a = 79a01 find number abc. Multiple solutions may exist. 
Big trouble
A man is sleeping in bed when his telephone suddenly rings.
“Hello, Señor Rod? This is Ernesto, the caretaker at your country house.”
“Ah yes, Ernesto. What can I do for you? Is there a problem?”
“Um, I am just calling to advise you, Senor Rod, that your parrot, he is dead.”
“My parrot? Dead? The one that won the international competition?”
“Si, Señor, that's the one.”
“Damn! That's a pity! I spent a small fortune on that bird. What did he die from?”
“From eating the rotten meat, Señor Rod.”
“Rotten meat? Who the hell fed him rotten meat?”
“Nobody, Señor. He ate the meat of the dead horse.”
“Dead horse? What dead horse?”
“The thoroughbred, Señor Rod.”
”My prize thoroughbred is dead?”
”Yes, Señor Rod, he died from all that work pulling the water cart.”
“Are you insane? What water cart?”
“The one we used to put out the fire, Señor.”
“Good Lord!! What fire are you talking about, man?!”
“The one at your house, Señor! A candle fell and the curtains caught on fire.”
“What the hell?” Are you saying that my mansion is destroyed because of a candle?”
“Yes, Señor Rod.”
“But there's electricity at the house! What was the candle for?”
“For the funeral, Señor Rod.”
“WHAT BLOODY FUNERAL?”
“Your wife's, Señor Rod. She showed up very late one night and I thought she was a thief, so I hit her with your new TaylorMade Super Quad 460 golf club.”
“Ernesto, if you broke that driver, you're in serious trouble!”
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. SupernovaIn 1181, a supernova was observed by Chinese astronomers in the constellation now known as Cassiopeia, and noted one day later from Japan. Ancient records of Chinese court astronomers reported“a guest star appearing in k'uei invading the Ch'uan-she-hsing”and that it remained visible for 185 days (over 6 months). A supernova remnant, now named 3C58, found by radio astronomers in the 1960s, was first proposed to be the remnant of the supernova 1181 by F. Richard Stephenson. The associated radio and X-ray pulsar rotates sedately at about 15 times per second. Stephenson wrote in 2006 that this supernova is one of only five temporary stars observed in the past 1500 years that have been confidently identified.«[Image: four-day X-ray observation of 3C58 by the Chandra X-ray Observatory, shown in pseudo colour with red representing low energy X-rays and blue for high energy.] |
Calculate the number 4402
NUMBERMANIA: Calculate the number 4402 using numbers [2, 6, 4, 6, 95, 346] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find number abc
If b88a3 + 2c41c = c82c2 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 2040
NUMBERMANIA: Calculate the number 2040 using numbers [1, 9, 2, 4, 55, 234] 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 (10, 12, 13, 24, 31, 33, 34, 67, 69, 70) 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 3b2a8 + c2524 = 1b2c92 find number abc. Multiple solutions may exist. 
