BRAIN TEASERS

# Calculate the number 2045

NUMBERMANIA: Calculate the number 2045 using numbers [7, 2, 5, 8, 78, 396] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania

### At The Bar

I was sitting at a bar with a friend the other night when he casually pointed across the bar from us and said, "see those two old drunks sitting there... that's going to be us in ten years."

I looked and him and said, "that's a mirror stupid!"

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### Stonehenge

In 1952, Prof. Willard F. Libby determined the age of Stonehenge on Salisbury Plain, England, at about 1848 BC (+/- 275 years) through analysis of the carbon-14 radioisotope in charcoal remains excavated there there. Update of C-14 ceases when plants or animals die, and the proportion in the organic remains steadily declines through radioactive decay. Since the half-life of C-14 is about 5,600 years, measurement of the remaining proportion in dead organic matter, indicates the age of that sample. Astronomer Sir Joseph Norman Lockyer had previously calculated that on Midsummer Day, 1680 BC, the sun rose directly over a special marking notch that can still be seen on the Heel Stone. Libby's measurements support that estimate.«
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