BRAIN TEASERS
Brain Teasers User Profile

Nasrin 24 T

rank
12
points
3241
See full ranking list
short ranking list
10. Manguexa Wagle 3755
11. Rutu Raj 3334
12. Nasrin 24 T 3241
13. Nílton Corrêa De Sousa 3213
14. Sanja Šabović 3068
last 3 solved tasks
If accab - 31c13 = c10b1 find number abc. Multiple solutions may exist.
The aim is to place the some numbers from the list (12, 13, 19, 20, 21, 27, 31, 32, 38, 61) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B*C.
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.

Johann Tobias Mayer

Born 17 Feb 1723; died 20 Feb 1762 at age 39.German astronomer who developed lunar tables that greatly assisted navigators in determining longitude at sea. Mayer also discovered the libration (or apparent wobbling) of the Moon. Mayer began calculating lunar and solar tables in 1753 and in 1755 he sent them to the British government. These tables were good enough to determine longitude at sea with an accuracy of half a degree. Mayer's method of determining longitude by lunar distances and a formula for correcting errors in longitude due to atmospheric refraction were published in 1770 after his death. The Board of Longitude sent Mayer's widow a payment of 3000 pounds as an award for the tables.

I have learned how t...

“I have learned how to take a compliment because I'm not usually offered any.”

Jokes of the day - Daily updated jokes. New jokes every day.
Follow Brain Teasers on social networks
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.