Find number abc
[7157] Find number abc - If c8b0a - 1a0c1 = 8a613 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 8
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Find number abc

If c8b0a - 1a0c1 = 8a613 find number abc. Multiple solutions may exist.
Correct answers: 8
#brainteasers #math
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Knock Knock Collection 187

Knock Knock
Who's there?
Vivaldi!
Vivaldi who?
Vivaldi books, there's nothing to read!
Knock Knock
Who's there?
Vlad!
Vlad who?
Vlad to meet you!
Knock Knock
Who's there?
Voodoo!
Voodoo who?
Voodoo you think you are!
Knock Knock
Who's there?
Waddle!
Waddle who?
Waddle you give me if I go away!
Knock Knock
Who's there?
Wade!
Wade who?
Wade till next time!
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Portland cement

In 1824, in Yorkshire, England, Joseph Aspdin, a stone mason, patented Portland cement, made by burning finely pulverized lime and clay at high temperatures in kilns (UK patent No. 5022). Thus Aspdin had made a manufactured counterpart to natural or Roman cement - a crude formulation of lime and volcanic ash used as early as 27 BC. Aspdin produced a hydraulic cement that would harden with the addition of water. He named his invention "Portland cement" not only to distinguish it from Roman cement, but also as a marketing tool: concrete made from his new cement resembled a highly prized building stone quarried on the Isle of Portland off the British coast. Like flour in a fruit cake, cement glues aggregate (sand or gravel) together to make a "rock" (concrete).
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