BRAIN TEASERS
Brain Teasers User Profile

Brian Thompson

rank
444
points
2
See full ranking list
short ranking list
442. Panindra Kr 2
443. Tahiamisr Misr 2
444. Brian Thompson 2
445. Bea Escaro 2
446. Morgan Haigh 2
last 3 solved tasks
MATH PUZZLE: Can you replace the question mark with a number?
NUMBERMANIA: Calculate the number 1590 using numbers [4, 4, 5, 5, 22, 341] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Edward A. Doisy

Born 13 Nov 1893; died 23 Oct 1986 at age 92.Edward Adelbert Doisy was an American biochemist who shared (with Henrik Dam) the 1943 Nobel Prize for Physiology or Medicine for his isolation and synthesis of vitamin K, a substance that encourages blood clotting (1939), used in medicine and surgery. With the embryologist Edgar Allen (1922-34), he developed assay techniques that facilitated research on sex hormones. Doisy and his associates isolated the sex hormones estrone (theelin, 1929; the first estrogen to be crystallized), estriol (theelol, 1930), and estradiol (dihydrotheelin, 1935). In 1936-39 he isolated two forms of the vitamin, (K1 from lucerne seed and K2 from fish meal, in a pure crystalline form), determined their chemical structures, and synthesized the vitamin.«

A nun and a huge man were stan...

A nun and a huge man were standing in an elevator. Being the nice person that she was, she looked over at him, smiled, and said "T.G.I.F." He looked back at her and said "S.H.I.T." The nun was shocked. She turned to the man and said "There was no need to be rude, all I said was "Thank God It's Friday." The man looked back at her and said, "Well you must have misunderstood me because all I said was Sorry Honey, it's Thursday."
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.