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Calculate the number 5389

NUMBERMANIA: Calculate the number 5389 using numbers [7, 7, 1, 7, 27, 750] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 9

The first user who solved this task is Nílton Corrêa de Sousa.

#brainteasers #math #numbermania

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Pay you to be good...

As a mother was bribing her little boy with a quarter so he would behave, she said, "Why do I always have to pay you to be good?

Why can't you be good for nothing like your dad?"

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Edwin Ray Guthrie

Died 23 Apr 1959 at age 73 (born 9 Jan 1886).American psychologist whose work dealt with the psychology of learning and the role association plays. In his Law of Contiguity, he held that “a combination of stimuli which has accompanied a movement, will on its recurrence tend to be followed by that movement.” He said that all learning is based on a stimulus- response association. Movements are small stimulus- response combinations. These movements make up an act. A learned behavior is a series of movements. It takes time for the movements to develop into an act. He believed that learning is incremental. Some behavior involves repetition of movements and what is learned are movements, not behaviors.

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