BRAIN TEASERS

# What number comes next?

Look at the series (1, 2, 11, 22, 121, 1012, 2101), determine the pattern, and find the value of the next number!
The first user who solved this task is Sanja Šabović.
#brainteasers #math

### Getting Airsick

A little guy gets on a plane and sits next to the window. A few minutes later, a big, heavy, mean-looking guy plops down in the seat next to him and immediately falls asleep.

The little guy starts to feel a little airsick, but he's afraid to wake the big guy up to ask if he can go to the bathroom. He knows he can't climb over him, and so the little guy sits there, looking at the big guy, trying to decide what to do.

Suddenly, the plane hits an air pocket and an uncontrollable wave of nausea passes over the little guy. He can't hold it in any longer and he pukes all over the big guy's chest. About five minutes later the big guy wakes up, looks down, and sees the vomit all over him.

"So," says the little guy: "are you feeling better now?"

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### John Franklin Enders

Died 8 Sep 1985 at age 88 (born 10 Feb 1897).American virologist, microbiologist and virologist who (collaborating with Frederick C. Robbins and Thomas H. Weller) was awarded the Nobel Prize for Physiology or Medicine for 1954 for his part in cultivating the poliomyelitis virus in nonnervous-tissue cultures (1949), a preliminary step to the development of the polio vaccine. They had cultivated the polio virus in test tube cultures of human tissue for the first time. They further demonstrated that the virus could be grown on a wide variety of tissue and not just nerve cells. This at last allowed the polio virus to be studied, typed, and produced in quantity. Without such an advance the triumphs of Albert Sabin and Jonas Salk in developing a vaccine against polio in the 1950s would have been impossible.
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