BRAIN TEASERS

enter your answer and press button OK

Find number abc

If 6b9c4 - 1a7ac = 4c169 find number abc. Multiple solutions may exist.

Correct answers: 0

#brainteasers #math

Register with your Google Account and start collecting points.

Check your ranking on list.

Taking public transit is a goo...

Taking public transit is a good way to get late.

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...

Richard Dixon Oldham

Died 15 Jul 1936 at age 77 (born 31 Jul 1858). Irish geologist and seismologist who discovered evidence for the existence of the Earth's liquid core (1906). In studying seismograms of great 1897 Indian Earthquake he identified P (primary) and S (secondary) waves. It is interesting that he did not get a clue to the presence of the core from the S waves, which are actually incapable of being transmitted through the liquid of the outer core. (The liquid core does not transmit the shear wave energy released during an earthquake.) Rather he noted the existence of a shadow zone in which P waves from an earthquake in the opposite hemisphere of the earth failed to appear.

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.