BRAIN TEASERS

# MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (1, 2, 5, 6, 11, 18, 23, 24, 27, 30, 38, 39, 42) 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.
The first user who solved this task is Roxana zavari.
#brainteasers #math #magicsquare

### Why Do Frogs Like St. Patrick's Day?

Q: Why did St. Patrick drive all the snakes out of Ireland?
A: He couldn't afford plane fare
Q: What do you call a fake stone in Ireland?
A: A sham rock
Q: Why do frogs like St. Patrick's Day?
A: Because they're always wearing green
Q: What does a leprechaun call a happy man wearing green?
A: A Jolly Green Giant
Q: What did one Irish ghost say to the other?
A: 'Top o' the moaning!
Q: How can you tell if an Irishman is having a good time?
A: He's Dublin over with laughter!
***

Knock, knock!
Who's there?
Irish.
Irish who?
Irish you a happy St. Patrick's Day!
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### Hubble notifies Shapley of Andromeda distance

In 1924, Edwin Hubble wrote a letter to Harlow Shapley, which he concluded by saying, “...the distance [to the Andromeda nebula] comes out something over 300,000 parsecs.” Hubble discussed in the letter his measurement of the magnitudes of the Cepheid variable stars in the Andromeda nebula he had found and confirmed. He used their measured characteristics to calculate their distance, definitely about a million light years from our Solar System. This was the evidence that Andromeda was a separate galaxy, far beyond the Milky Way. This was the first proof of an “island universe.” After collecting more data, Hubble sent a paper read on 1 Jan 1925 to a meeting of the American Astronomical Society. Meanwhile, Shapley remained unconvinced, as when he debated Heber Curtis on 26 Apr 1920.«[Image: graph of light curve of the first Andromeda Cepheid Hubble discovered, from his letter to Shapley.]
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