BRAIN TEASERS

enter your answer and press button OK

Calculate the number 4300

NUMBERMANIA: Calculate the number 4300 using numbers [8, 9, 3, 7, 25, 442] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 7

The first user who solved this task is Nasrin 24 T.

#brainteasers #math #numbermania

Register with your Google Account and start collecting points.

Check your ranking on list.

Two rednecks are walking down...

Two rednecks are walking down different ends of a street toward each other, and one is carrying a sack. When they meet, one says, "Hey Tommy Ray, what'cha got in th' bag?"
"Jus' some chickens."
"If I guesses how many they are, can I have one?"
"Shoot, ya guesses right and I'll give you both of them."
"OK. Umm... five?"

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...

Georg Brandt

Born 21 Jul 1694; died 29 Apr 1768 at age 73. Georg Rushd Brandt was a Swedish chemist who was the first person to discover a metal unknown in ancient times, which he isolated and named cobalt (1730). He published (1733) findings on the composition and solubility of arsenic compounds then researched antimony, bismuth, mercury, and zinc. His work on methods of producing hydrochloric, nitric, and sulfuric acids was published in 1741 and 1743. Brandt was one of the first chemists to completely forswear alchemy, and devoted his later years to exposing fraudulent alchemical processes for producing gold. Ancient Egyptians used tiny amounts of cobalt to make their glass blue. Cobalt is added to steel to make it harder and have a higher melting point. Traces of it are found in meat and dairy products as vitamin B-12.[Note: Brandt's birthdate is given as 21 Jul 1694 in Dictionary of Scientific Biography and Encyclopedia Britannica, but as 26 Jun 1694 in The Discovery of the Elements by Mary Elvira Weeks (1934).]

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.