BRAIN TEASERS

# Calculate the number 2768

NUMBERMANIA: Calculate the number 2768 using numbers [3, 8, 1, 3, 28, 673] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania

### BETTER THAN EATING THE EVIDENCE

Morris is at work one day when he notices that his co-worker, Joe, is wearing an earring. This man knows his co-worker to be a normally conservative fellow, and is curious about his sudden change in "fashion sense."

"Hey Joe, he yells out - I didn't know you were into earrings."

"Don't make such a big deal out of it,...it's only an earring." Says Joe sheepishly.

"No really," probes Morris, "How long have you been wearing one?"

"Ever since my wife found it in our bed."

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### Bullets

In 1854, Horace Smith & Daniel Wesson were issued a U.S. patent for their design of a self-contained metal bullet cartridge (No. 11,496). The invention related to the arrangement of the tallow within the cartridge between the ball and charge of powder. The rimfire cartridge included percussion-priming. It was improved upon with patent No. 27,933 on 17 Apr 1860. Long before the U.S. civil war, Jean Samuel Pauly was granted a French patent in 1812 for a self-contained cartridge. By 1846, Lefaucheux had invented a pin fire cartridge and in 1851, Flobert created the rimfire cartridge. However, Smith and Wesson, could not produce a revolver to fire their new bullet until several years later when the Colt patent on the mechanically rotating cylinder design expired in 1857.«
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