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Calculate the number 489

NUMBERMANIA: Calculate the number 489 using numbers [9, 9, 4, 5, 97, 992] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 4

#brainteasers #math #numbermania

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Word at funeral

A man is at his wife’s funeral and a woman asks him if she can say a word.

He says okay and she stands up, saying ‘Plethora’.

The man replies, ‘Thanks, that means a lot’.

by Reddit user u/DVPC4

Photo by Rhodi Alers de Lopez on Unsplash

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Computer pump

In 1932, the first U.S. patent for a computer pump was issued to the inventors, Robert J. Jauch, Ivan R. Farnham and Ross H. Arnold for their "Liquid Dispensing Apparatus" (No. 1,888,533). Their motorized pump both metered and displayed the exact gallons of gasoline or other liquid dispensed, and also accurately computed and showed the price in dollars and cents while delivery was made. The internal totalizer could be easily reset for any new price per gallon. It solved the problems of inaccurate delivery of volume from a visible type dispenser, and its necessary ready-reckoning card with quantity and cost tables, which needed a new card when prices changed. The Wayne Co., Fort Wayne, Indiana, marketed it from 1 Nov 1931.«

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