Find number abc
[8090] Find number abc - If bb69c - 2a123 = c95b1 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 0
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Find number abc

If bb69c - 2a123 = c95b1 find number abc. Multiple solutions may exist.
Correct answers: 0
#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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Johannes Nikolaus Tetens

Born 16 Sep 1736; died 17 Aug 1807 at age 70.German natural philosopher whose empirical approach strongly influenced the work of Immanuel Kant, and later in his life, Tetens became interested in mathematics, especially in actuarial applications. From 1760, as a teacher of natural philosophy he wrote on diverse topics but later began the development of the field of developmental psychology in Germany. He wrote Philosophische Versuche über die menschliche Natur und ihre Entwickelung (1777) on the origin and structure of knowledge. He changed career after 1789 to the civil service during which time he pursued mathematics. As a statistician he produced an Introduction to the Calculation of Life Annuities (1785) and On the Tetens Mortality Curve (1785).«
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