BRAIN TEASERS

enter your answer and press button OK

Calculate the number 2223

NUMBERMANIA: Calculate the number 2223 using numbers [4, 2, 7, 7, 94, 790] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 1

#brainteasers #math #numbermania

Register with your Google Account and start collecting points.

Check your ranking on list.

A woman phoned her dentist whe...

A woman phoned her dentist when she received a huge bill. "I'm shocked!" she complained. "This is three times what you normally charge."
"Yes, I know," said the dentist. "But you yelled so loud, you scared away two other patients."

Jokes of the day - Daily updated jokes. New jokes every day.

Follow Brain Teasers on social networks

Brain Teasers

puzzles, riddles, mathematical problems, mastermind, cinemania...

Martha Wollstein

Born 21 Nov 1868; died 30 Sep 1939 at age 70.American physician and pediatric pathologist. Her first experimental work involved infant diarrhea and confirmed earlier studies relating the dysentery bacillus to the disease. At the Rockefeller Institute of Medical Research, she collaborated on the first experimental work on polio in the U.S., worked on an early investigation of pneumonia and developed, with Harold Amoss, a method for preparing antimeningitis serum. She also pioneered in early research on mumps, indicating, though not proving, its viral nature. After 1921, Wollstein investigated pediatric pathology at the Babies Hospital, especially jaundice, congenital anomalies, tuberculosis, meningitis, and leukemia. In 1930, she was the first female member of the American Pediatric Society.

This site uses cookies to store information on your computer. Some are essential to help the site properly. Others give us insight into how the site is used and help us to optimize the user experience. See our privacy policy.