Calculate AxB
[643] Calculate AxB - Determine the pattern of the subtraction, and calculate AxB. - #brainteasers #math - Correct Answers: 27 - The first user who solved this task is Sanja Šabović
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Calculate AxB

Determine the pattern of the subtraction, and calculate AxB.
Correct answers: 27
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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Password

A female secretary was helping her new boss set up his computer and asked him what word he would like to use as a password to log in with.

Wanting to embarrass his new secretary a bit and let her know where they stood, he smugly told her to enter 'penis.'

Without blinking or saying a word, she entered the password. She then almost died laughing at the computer's response:

PASSWORD REJECTED. NOT LONG ENOUGH!

Submitted by Calamjo

Edited by Curtis

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Thermite

In 1925, an ice jam was removed using thermite for the first time in the U.S. Some 250,000-tons of ice jamming the St. Lawrence River near Waddington, N.Y., broke up just hours after the reaction of three 90-lb thermite charges (a mixture of finely divided magnesium and red iron oxide, which, when ignited, gives a violent reaction that produces hot molten iron.) The method was devised by Howard Turner Barnes, of McGill University, Canada, and patented 17 Nov 1925 (U.S. No. 1,562,137). The following year he similarly helped break up an ice gorge in a stretch of the Allegheny River, at Franklin, Pa. He had studied of the properties of ice and the engineering problem of ice at intakes of hydroelectric stations on the St. Lawrence River. He succeeded (1908) Ernest Rutherford as Macdonald Professor of Physics.«[Image: Small-scale thermite reaction on ice.]
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