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Chatchai Khumtaveeporn

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MATH PUZZLE: Replace the question marks with a numbers and calculate product these numbers.
If 17a5b + 663c3 = a41ac find number abc. Multiple solutions may exist.
Find the value of the missing number.

Dayton Clarence Miller

Died 22 Feb 1941 at age 74 (born 13 Mar 1866). American physicist. Author of The Science of Musical Sounds (1916). Miller's collection of nearly 1,650 flutes and other instruments, and other materials mostly related to the flute, is now at the Library of Congress. To provide a mechanical means of recording sound waves photographically, he invented the phonodeik (1908). He became expert in architectural ecoustics. During WW I, he was consulted concerning using his photodeik to help locate enemy guns. Miller spent considerable research effort on repeating the Michelson and Morley experiment, proposed by Maxwell, to detect a stationary aether. He spent some time working with Morley (1902-4), then more time at Mt. Wilson, recording results favoring the presence of the aether.

Special golf ball

Two friends went out to play golf and were about to tee off, when one fellow noticed that his partner had just one golf ball.

“Don’t you have at least one other golf ball?” he asked.

The other guy replied that no, he only needed the one.

“Are you sure?” the friend persisted. “What happens if you lose that ball?”

The other guy replied, “This is a very special golf ball. I won’t lose it so I don’t need another one.”

"Well,” the friend asked, “what happens if you miss your shot and the ball goes in the lake?”

“That’s OK,” he replied, “this special golf ball floats. I’ll be able to retrieve it.”

“Well what happens if you hit it into the trees and it gets lost among the bushes and shrubs?”

The other guy replied, “That’s OK too. You see, this special golf ball has a homing beacon. I’ll be able to get it back -- no problem.”

Exasperated, the friend asks, “OK. Let’s say our game goes late, the sun goes down, and you hit your ball into a sand trap. What are you going to do then?”

“No problem,” says the other guy, “you see, this ball is florescent. I’ll be able to see it in the dark.”

Finally satisfied that he needs only the one golf ball, the friend asks, “Hey, where did you get a golf ball like that anyway?”

The other guy replies, “I found it.”

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