QUES: In modular arithmetic, two integers are added and then the sum is divided by a positive integer called the modulus. The result of modular addition is the remainder of that division. For any modulus, n, the set of integers from 0 to n 1 forms a group under modular addition: the inverse of any element a is n a, and 0 is the identity element. This is familiar from the addition of hours on the face of a clock: if the hour hand is on 9 and is advanced 4 hours, it ends up on 1, as shown at the right. This is expressed by saying that 9 + 4 equals 1 "modulo 12" or, in symbols,

How many integers are divided in modular arithmetic?
What is the answer?
ANS: unanswerable
QUES: Miami and its suburbs are located on a broad plain between the Florida Everglades to the west and Biscayne Bay to the east, which also extends from Florida Bay north to Lake Okeechobee. The elevation of the area never rises above 40 ft (12 m) and averages at around 6 ft (1.8 m) above mean sea level in most neighborhoods, especially near the coast. The highest undulations are found along the coastal Miami Rock Ridge, whose substrate underlies most of the eastern Miami metropolitan region. The main portion of the city lies on the shores of Biscayne Bay which contains several hundred natural and artificially created barrier islands, the largest of which contains Miami Beach and South Beach. The Gulf Stream, a warm ocean current, runs northward just 15 miles (24 km) off the coast, allowing the city's climate to stay warm and mild all year.

In meters, what is the average weight above sea level of the Miami area?
What is the answer?
ANS: unanswerable
QUES: During this period Boston flourished culturally as well, admired for its rarefied literary life and generous artistic patronage, with members of old Boston familieseventually dubbed Boston Brahminscoming to be regarded as the nation's social and cultural elites.

Who came to be known as the nation's social elites?
What is the answer?
ANS:
Boston Brahmins