BRAIN TEASERS

# Calculate the number 432

NUMBERMANIA: Calculate the number 432 using numbers [4, 7, 7, 2, 24, 355] 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

### English lessons

A missionary suddenly realizes that the one thing he hasn't yet taught the natives he serves is how to speak English, so he takes the chief for a walk in the jungle.

He points to a tree and says to the chief: "This is a tree." The chief looks at the tree and grunts: "Tree."

The missionary is pleased with the response. They walk a little farther and the missionary points to a rock and says: "This is a rock."

Hearing this, the chief looks and grunts: "Rock."

The missionary is really getting enthusiastic about the results when he hears a rustling in the bushes.

As he peeks over the top, he sees a couple of the natives in the midst of heavy sexual activity. Flustered, the missionary quickly says to the chief: "Riding a bike."

The chief looks at the preoccupied couple briefly, pulls out his blowgun and kills them.

The missionary goes ballistic and yells at the chief that he has spent years teaching the tribe how to be civilized and kind to each other.

"How could you kill these people in cold blood that way?" he demands.

"My bike," the chief replies.

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### Curt Paul Richter

Born 20 Feb 1894; died 21 Dec 1988 at age 94.American psychobiologist who discovered the body's biorhythms and identified the part of the brain that controls daily cycles of sleeping, waking and other activities. He first wrote about this biological clock in a 1927 paper in which he described how internal cycles control an animal's drinking, eating, running, and sexual behaviour. He also studied the great extent to which animal biological processes can be modifed by learned behaviour. Richter connected the discovery of fire by ancient peoples to significant modifications in habits, communication, learning and even resulted in changes in brain structure. He related behaviour and the biochemistry of sleep, stress, and the onset of disease. Altogether Richter wrote over 250 research papers.«
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