Can you replace the question mark with a number?
[6420] Can you replace the question mark with a number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 60 - The first user who solved this task is Nasrin 24 T
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Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 60
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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Guess who's the bride

A young Jewish man excitedly tells his mother he’s fallen in love and that he is going to get married. He says, “Just for fun, Ma, I’m going to bring over three women and you try and guess which one I’m going to marry.”

The mother agrees.

The next day, he brings three beautiful women into the house and sits them down on the couch and they chat for a while. He then says, “OK, Ma, guess which one I’m going to marry.”

She immediately replies, “The one on the right.”

“That’s amazing, Ma. You’re right. How did you know?

The Jewish mother replies, “I don’t like her.”

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Hydrogen-cooled generator

In 1941, the first hydrogen-cooled electrical generator for outdoor installation in the U.S. was put into operation. Built by the General Electric Company for the city of Glendale, Cal., it was rated 20,000 kW and cost $391,669. It was mounted on an open deck. (The first GE-built, hydrogen-cooled indoor generator started operation started on 12 Oct 1937). In modern hydrogen-cooled turbo-generators, hydrogen is used as a coolant fluid. The stator core is direct cooled with hydrogen, for example, at a pressure of 3-6 bar. The advantage of hydrogen is a high thermal conductivity and lower friction than air-cooled generators, thus more efficient operation, lower fuel consumption, highest output capacity, and lowest operating cost.*
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