BRAIN TEASERS

enter your answer and press button OK

What is the 4 digit number i...

What is the 4 digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by 3?

Correct answers: 72

The first user who solved this task is Djordje Timotijevic.

#brainteasers #math #riddles

Register with your Google Account and start collecting points.

Check your ranking on list.

When you're having a good day

When you're having a good day and then you realise tomorrow is Monday.

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...

Marian Koshland

Died 28 Oct 1997 at age 76 (born 25 Oct 1921). American immunologist who discovered that the differences in amino acid composition of antibodies explains the efficiency and effectiveness with which they combat a huge range of foreign invaders. During WWII, her post-graduate studies included assisting with projects developing an Asiatic cholera vaccine, and combatting transmission of airborne pathogens in army barracks. In 1970 she became a professor of Microbiology and Immunology, after which she discovered the J chain (a B cell antibody subunit). In 1991, with colleagues, she identified a specialized intracellular pathway that transports antibodies into blood circulation, allowing for the multiplication of B cells essential in fighting infection.«*

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.