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Sai Ram

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365. Dave Edmonds 4
366. Žarko Jovanović 4
367. Sai Ram 4
368. Никола Ристић 4
369. Bitragunta Harshitha 4
last 3 solved tasks
If 2+3=10, 8+4=96, 7+2=63, 6+5=66 then 9+5=?
Which number should replace the question mark?
How much is 4x5?

Ernst Mach

Died 19 Feb 1916 at age 78 (born 18 Feb 1838). Austrian physicist and philosopher who established important principles of optics, mechanics, and wave dynamics. His early physical works were devoted to electric discharge and induction. Between 1860 and 1862 he studied in depth the Doppler Effect by optical and acoustic experiments. He introduced the "Mach number" for the ratio of speed of object to speed of sound is named for him. When supersonic planes travel today, their speed is measured in terms that keep Mach's name alive. His lifetime interest, however, was in psychology and human perception. He supported the view that all knowledge is a conceptual organization of the data of sensory experience (or observation).

Guilty Conscience

An elderly Italian Jew wanted to unburden his guilty conscience by talking to his Rabbi. "Rabbi, during World War II, when the Germans entered Italy, I pretended to be a Catholic and changed my name from Levy to Spumoni, and I am alive today because of it."
"Self preservation is allowable, and the fact that you never forgot that you were a Jew is admirable," said the Rabbi."Rabbi, during the war, a beautiful Jewish woman knocked on my door and asked me to hide her from the Germans. I hid her in my attic, and they never found her."
"That was a wonderful thing you did, and you have no need to feel guilty."
"It's worse, Rabbi. I was weak and told her she must repay me with sexual favors, which she did, repeatedly."
"You were both in great danger and would have suffered terribly if the Germans had found her. There is a favorable balance between good and evil, and you will be judged kindly. Give up your feelings of guilt."
"Thank you, Rabbi. That's a great load off my mind. But I have one more question."
"And what is that?"
"Should I tell her the war is over?"
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