MAGIC SQUARE: Calculate A-B+C
The aim is to place the some numbers from the list (1, 4, 10, 21, 22, 24, 29, 30, 64, 69, 72, 78) 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.Correct answers: 15
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #magicsquare
President Obama and David Cameron...
President Obama and David Cameron are shown a time machine which can see 100 years into the future. They both decide to test it by asking a question each.
President Obama goes first: "What will the USA be like in 100 years time?"
The machine whirrs and beeps and goes into action and gives him a printout. He reads it out: "The country is in good hands under the new president, crime is non-existent, there is no conflict, the economy is healthy. There are no worries."
David Cameron thinks, "It's not bad time machine, I'll have a bit of that." So he asks: "What will Britain be like in 100 years time?"
The machine whirrs and beeps and goes into action, and he gets a printout.
But he just stares at it.
"Come on David," says Obama, "Tell us what it says."
"I can't! It's all in Arabic!"
President Obama goes first: "What will the USA be like in 100 years time?"
The machine whirrs and beeps and goes into action and gives him a printout. He reads it out: "The country is in good hands under the new president, crime is non-existent, there is no conflict, the economy is healthy. There are no worries."
David Cameron thinks, "It's not bad time machine, I'll have a bit of that." So he asks: "What will Britain be like in 100 years time?"
The machine whirrs and beeps and goes into action, and he gets a printout.
But he just stares at it.
"Come on David," says Obama, "Tell us what it says."
"I can't! It's all in Arabic!"