BRAIN TEASERS

enter your answer and press button OK

Calculate the number 840

NUMBERMANIA: Calculate the number 840 using numbers [8, 6, 8, 5, 99, 164] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 2

#brainteasers #math #numbermania

Register with your Google Account and start collecting points.

Check your ranking on list.

Teacher and student

Teacher: "What is the chemical formula for water?"
Student: "HIJKLMNO."
Teacher: "What are you talking about?"
Student: "Yesterday you said it's H to O!"

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...

Lewis Latimer

Died 11 Dec 1928 at age 80 (born 4 Sep 1848). Lewis Howard Latimer was a Black-American inventor who contributed to electrical technology. After joining a Boston firm of patent solicitors as an office boy, he taught himself drafting and eventually rose in the mid-1870's to the position of chief draftman. Meanwhile, he was issued his first patent for his invention of a water-closet for railroad cars. In 1880, he moved to be draftsman and private secretary to Hiram Stevens Maxim of the U.S. Lighting Co. where he took charge of the installation of commercial incandescent lighting systems. He patented his carbon filament lamp improvements and other inventions. By 1883, he was working for the Edison Electric Light Co., where his expertise with patents was recognised with a position with its new legal department in 1889.«

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.