BRAIN TEASERS

# Calculate the number 1504

NUMBERMANIA: Calculate the number 1504 using numbers [7, 4, 8, 8, 15, 309] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #numbermania

### A 60-year-old man went to the...

A 60-year-old man went to the doctor for a check-up. The doctor told him, "You're in terrific shape. There's nothing wrong with you. Why, you might live forever. You have the body of a 35 year old. By the way, how old was your father when he died?"
The 60 year old responded, "Who said he was dead?"
The doctor was surprised and asked, "How old is he and is he very active?"
The 60 year old responded, "Well, he is 82 years old and he still goes skiing three times a season and surfing three times a week during the summer."
The doctor couldn't believe it. "Well, how old was your grandfather when he died?"
The 60 year old responded again, "Who said he was dead?"
The doctor was astonished. He said, "You mean to tell me you are 60 years old and both your father and your grandfather are alive? Is your grandfather very active?"
The 60 year old said, "He goes skiing at least once a season and surfing once a week during the summer. Not only that," said the patient, "my grandfather is 106 years old, and next week he is getting married again."
The doctor said, "At 106 years old, why on earth would your grandfather want to get married?"
His patient looked up at the doctor and said, "Who said he wanted to?"
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### John Muir

Born 21 Apr 1838; died 24 Dec 1914 at age 76. Scottish-American naturalist, farmer, explorer, writer and conservationist who championed the establishment of Sequoia and Yosemite national parks in California. In 1849, the Muir family emigrated to the U.S. As an inventor, he carved clocks and curious but practical mechanisms (like a device that tipped him out of bed before dawn), that won Wisconsin State Fair prizes (1860). He had begun travelling the U.S. by 1867. In his later years he wrote extensively: 300 articles and 10 major books that recounted his travels, his beloved Sierra Nevada, and expounded his naturalist philosophy. Muir drew attention to the devastation of mountain meadows and forests by sheep and cattle, leading to his role as “Father of the National Park System.”
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