BRAIN TEASERS

# Calculate the number 310

NUMBERMANIA: Calculate the number 310 using numbers [4, 4, 1, 1, 28, 278] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #numbermania

### MONDAY: It's fun to cook for...

MONDAY: It's fun to cook for Tom. Today I made angel food cake. The recipe said beat 12 eggs separately. The neighbors were nice enough to loan me some extra bowls.
TUESDAY: Tom wanted fruit salad for supper. The recipe said serve without dressing. So I didn't dress. What a surprise when Tom brought a friend home for supper.
WEDNESDAY: A good day for rice. The recipe said wash thoroughly before steaming the rice. It seemed kind of silly but I took a bath anyway. I can't say it improved the rice any.
THURSDAY: Today Tom asked for salad again. I tried a new recipe. It said prepare ingredients, lay on a bed of lettuce one hour before serving. Tom asked me why I was rolling around in the garden.
FRIDAY: I found an easy recipe for cookies. It said put the ingredients in a bowl and beat it. There must have been something wrong with this recipe. When I got back, everything was the same as when I left.
SATURDAY: Tom did the shopping today and brought home a chicken. He asked me to dress it for Sunday (oh boy).For some reason Tom keeps counting to ten.
SUNDAY: Tom's folks came to dinner. I wanted to serve roast but all I had was hamburger. Suddenly I had a flash of genius. I put the hamburger in the oven and set the controls for roast. It still came out hamburger, much to my disappointment.
GOOD NIGHT DEAR DIARY. This has been a very exciting week. I am eager for tomorrow to come so I can try out a new recipe on Tom. If I can talk Tom into buying a bigger oven, I would like to surprise him with chocolate moose.
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### Pierre-Louis Dulong

Died 18 Jul 1838 at age 53 (born 12 Feb 1785).French chemist and physicist who helped formulate the Dulong-Petit law of specific heats (1819), which proved useful in determining atomic weights. He began in a medical career, but turned to botany and then chemistry. In 1811, he discovered nitrogen trichloride, losing a finger and the sight of one eye when it spontaneously exploded. Jointly with Alexis Petit (1815-20), they measured the specific heat of elements and related them to atomic weights. They discovered their new law that specific heat times atomic weight of an element is a constant, about six calories per gram atom, the same for all solid elements.«
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