Calculate the number 7649
[7754] Calculate the number 7649 - NUMBERMANIA: Calculate the number 7649 using numbers [6, 6, 8, 9, 65, 505] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 1
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Calculate the number 7649

NUMBERMANIA: Calculate the number 7649 using numbers [6, 6, 8, 9, 65, 505] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
#brainteasers #math #numbermania
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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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Stonehenge

In 1952, Prof. Willard F. Libby determined the age of Stonehenge on Salisbury Plain, England, at about 1848 BC (+/- 275 years) through analysis of the carbon-14 radioisotope in charcoal remains excavated there there. Update of C-14 ceases when plants or animals die, and the proportion in the organic remains steadily declines through radioactive decay. Since the half-life of C-14 is about 5,600 years, measurement of the remaining proportion in dead organic matter, indicates the age of that sample. Astronomer Sir Joseph Norman Lockyer had previously calculated that on Midsummer Day, 1680 BC, the sun rose directly over a special marking notch that can still be seen on the Heel Stone. Libby's measurements support that estimate.«
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