Problem: United States dollar:

Usually, the short-term goal of open market operations is to achieve a specific short-term interest rate target. In other instances, monetary policy might instead entail the targeting of a specific exchange rate relative to some foreign currency or else relative to gold. For example, in the case of the United States the Federal Reserve targets the federal funds rate, the rate at which member banks lend to one another overnight. The other primary means of conducting monetary policy include: (i) Discount window lending (as lender of last resort); (ii) Fractional deposit lending (changes in the reserve requirement); (iii) Moral suasion (cajoling certain market players to achieve specified outcomes); (iv) "Open mouth operations" (talking monetary policy with the market).

What does gold rate exchange mean?
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A: unanswerable

Problem: Old English was not static, and its usage covered a period of 700 years, from the Anglo-Saxon settlement of Britain in the 5th century to the late 11th century, some time after the Norman invasion. While indicating that the establishment of dates is an arbitrary process, Albert Baugh dates Old English from 450 to 1150, a period of full inflections, a synthetic language. Perhaps around 85 per cent of Old English words are no longer in use, but those that survived, to be sure, are basic elements of Modern English vocabulary.
About what percentage of Old English words are not present in Modern English?
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Answer: 85

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The tradition of presenting the trophy immediately after the game did not start until the 1882 final; after the first final in 1872 the trophy was not presented to the winners, Wanderers, until a reception held four weeks later in the Pall Mall Restaurant in London. Under the original rules, the trophy was to be permanently presented to any club which won the competition three times, although when inaugural winners Wanderers achieved this feat by the 1876 final, the rules were changed by FA Secretary CW Alcock (who was also captain of Wanderers in their first victory).
Where was the first trophy presented?
A: the Pall Mall Restaurant in London

Context and question: The simplest known circadian clock is that of the prokaryotic cyanobacteria. Recent research has demonstrated that the circadian clock of Synechococcus elongatus can be reconstituted in vitro with just the three proteins (KaiA, KaiB, KaiC) of their central oscillator. This clock has been shown to sustain a 22-hour rhythm over several days upon the addition of ATP. Previous explanations of the prokaryotic circadian timekeeper were dependent upon a DNA transcription/translation feedback mechanism.[citation needed]
What was the minimum amount of time the clock could be sustained in vitro?
Answer: unanswerable

Question: Like the rest of India, Hyderabad has a large informal economy that employs 30% of the labour force.:71 According to a survey published in 2007, it had 4050,000 street vendors, and their numbers were increasing.:9 Among the street vendors, 84% are male and 16% female,:12 and four fifths are "stationary vendors" operating from a fixed pitch, often with their own stall.:1516 Most are financed through personal savings; only 8% borrow from moneylenders.:19 Vendor earnings vary from 50 (74 US) to 800 (US$12) per day.:25 Other unorganised economic sectors include dairy, poultry farming, brick manufacturing, casual labour and domestic help. Those involved in the informal economy constitute a major portion of urban poor.:71
Is there an answer to this question: What percentage of the street vendors in Hyderabad were male in 2007?

Answer: 84%

Question: The length of the pitch for international adult matches is in the range of 100110 m (110120 yd) and the width is in the range of 6475 m (7080 yd). Fields for non-international matches may be 90120 m (100130 yd) length and 4590 m (50100 yd) in width, provided that the pitch does not become square. In 2008, the IFAB initially approved a fixed size of 105 m (344 ft) long and 68 m (223 ft) wide as a standard pitch dimension for international matches; however, this decision was later put on hold and was never actually implemented.
Is there an answer to this question: What is the range for the depth for international matches in meters?

Answer:
unanswerable