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Find number abc

If 75ab8 - 1ac54 = 5c254 find number abc. Multiple solutions may exist.

Correct answers: 1

#brainteasers #math

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Knock Knock Collection 194

Knock Knock
Who's there?
Wilfred!
Wilfred who?
Wilfred like his present?
Knock Knock
Who's there?
Willa!
Willa who?
Willa you marry me!
Knock Knock
Who's there?
William!
William who?
William-ind your own business!
Knock Knock
Who's there?
Willie!
Willie who?
Willie be home for dinner!
Knock Knock
Who's there?
Willis!
Willis who?
Willis rain ever stop!

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Johann Elert Bode

Died 23 Nov 1826 at age 79 (born 19 Jan 1747).German astronomer best known for his popularization of Bode's law. In 1766, his compatriot Johann Titius had discovered a curious mathematical relationship in the distances of the planets from the sun. If 4 is added to each number in the series 0, 3, 6, 12, 24,... and the answers divided by 10, the resulting sequence gives the distances of the planets in astronomical units (earth = 1). Also known as the Titius-Bode law, the idea fell into disrepute after the discovery of Neptune, which does not conform with the 'law' - nor does Pluto. Bode was director at the Berlin Observatory, where he published Uranographia (1801), one of the first successful attempts at mapping all stars visible to the naked eye without any artistic interpretation of the stellar constellation figures.

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