BRAIN TEASERS

# Calculate the number 567

NUMBERMANIA: Calculate the number 567 using numbers [2, 7, 9, 9, 40, 115] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania

### The boss wondered why one of h...

The boss wondered why one of his most valued employees was absent, but had not phoned in. Needing to have an urgent work problem resolved, he dialed the employee's home phone number and was greeted by a child's whispered, "Hello."
"Yes," whispered the small voice.
"May I talk with him?"
The child whispered, "No."
"Yes."
"May I talk with her?"
Again the small voice whispered, "No."
"Yes," whispered the child, "a policeman."
Wondering what a cop would be doing at his employee's home, the boss asked, "May I speak with the policeman?"
"No, he's busy," whispered the child.
"Busy doing what?"
"Talking to Mommy and Daddy and the Fireman," came the whispered answer.
Growing more worried as he heard a loud noise through the earpiece on the phone, the boss asked, "What is that noise?"
"A helicopter," answered the whispering voice.
"What is going on there?" demanded the boss, now truly apprehensive.
Again, whispering, the child answered, "The search team just landed a helicopter."
Alarmed, confused, and a little frustrated, the boss asked, "What are they searching for?"
Still whispering, the young voice replied with a muffled giggle..."Me!"
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## Brain Teasers

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### Tay Railway Bridge

In 1871, the foundation stone was laid for the Tay Railway Bridge to be built across the mile-wide Firth of Tay on the east Scottish coast. The two-mile bridge of lattice girders on ironwork columns was opened 31 May 1878. At the time, it was the longest bridge in the world. It had a clearance of about 88-ft above the high water mark in the middle of the firth to allow ships to pass up the Tay to Perth. Sir Thomas Bouch was the railway engineer in charge of its construction. He was knighted in Jun 1878, the month after it opened. It collapsed the following year, in a fierce gale on 28 Dec 1879, killing a trainload of people.«
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