QUES: The city has an average elevation of 43 metres (141 ft). Its highest elevations are two hills: the Cerro de Montevideo and the Cerro de la Victoria, with the highest point, the peak of Cerro de Montevideo, crowned by a fortress, the Fortaleza del Cerro at a height of 134 metres (440 ft). Closest cities by road are Las Piedras to the north and the so-called Ciudad de la Costa (a conglomeration of coastal towns) to the east, both in the range of 20 to 25 kilometres (16 mi) from the city center. The approximate distances to the neighbouring department capitals by road are, 90 kilometres (56 mi) to San Jose de Mayo (San Jose Department) and 46 kilometres (29 mi) to Canelones (Canelones Department).

How far is to the neighboring capitol of San Jose de Mayo?
What is the answer?
ANS: 90 kilometres
QUES: The most expensive part of a CD is the jewel case. In 1995, material costs were 30 cents for the jewel case and 10 to 15 cents for the CD. Wholesale cost of CDs was $0.75 to $1.15, which retailed for $16.98. On average, the store received 35 percent of the retail price, the record company 27 percent, the artist 16 percent, the manufacturer 13 percent, and the distributor 9 percent. When 8-track tapes, cassette tapes, and CDs were introduced, each was marketed at a higher price than the format they succeeded, even though the cost to produce the media was reduced. This was done because the apparent value increased. This continued from vinyl to CDs but was broken when Apple marketed MP3s for $0.99, and albums for $9.99. The incremental cost, though, to produce an MP3 is very small.

What was the wholesale cost of a cassette tape?
What is the answer?
ANS: unanswerable
QUES: Zinc serves a purely structural role in zinc fingers, twists and clusters. Zinc fingers form parts of some transcription factors, which are proteins that recognize DNA base sequences during the replication and transcription of DNA. Each of the nine or ten Zn2+ ions in a zinc finger helps maintain the finger's structure by coordinately binding to four amino acids in the transcription factor. The transcription factor wraps around the DNA helix and uses its fingers to accurately bind to the DNA sequence.

How many amino acids do the Zn2+ ions bind to?
What is the answer?
ANS:
four