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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.
Looking at the 3 ''equations'' below, what is the answer to the 4th one? 8 + 2 = 16106; 5 + 4 = 2091; 9 + 6 = 54153; 7 + 3 = ?
The aim is to place the some numbers from the list (10, 11, 14, 21, 22, 25, 27, 28, 31, 44, 60) 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.

Christian Goldbach

Born 18 Mar 1690; died 20 Nov 1764 at age 74.Russian mathematician whose contributions to number theory include Goldbach's conjecture, formulated in a letter to Leonhard Euler dated 7 Jul 1742. Stated in modern terms it proposes that: "Every even natural number greater than 2 is equal to the sum of two prime numbers." It has been checked by computer for vast numbers - up to at least 4 x 1014 - but still remains unproved. Goldbach made another conjecture that every odd number is the sum of three primes, on which Vinogradov made progress in 1937. (It has been checked by computer for vast numbers, but remains unproved.) Goldbach also studied infinite sums, the theory of curves and the theory of equations.«[Image: Letter to Euler, in which Goldbach presented his conjecture.]

Senior Citizen

Two businessmen in Florida were sitting down for a break in their soon-to-be new store. As yet, the store wasn't ready, with only a few shelves set up. One said to the other, ' I bet any minute now some senior citizen is going to walk by, put his face to the window, and ask what we're selling.'
No sooner were the words out of his mouth when, sure enough, a curious senior citizen walked to the window, had a peek, and in a soft voice asked
"What are you sellin' here?"
One of the men replied sarcastically, "We're selling assh*les."
Without skipping a beat, the old timer said, "You're doing well. Only two left."

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