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Quick maths of the Prince of Mathematics
Carl Fredrich Gauss (1777-1855) is one of the greatest astronomers and mathematicians of our time. Born in 18-century Germany, Gauss is also know as "the Prince of Mathematics". He is often compared with Archimedes, Issac Newton and Leonhard Euler for his acheivement as one of the founding fathers of modern mathematics.
Gauss was noted for his gift in mathematics even in his young age. When he was a junior school student, his teacher once ask his class to solve the following problem:
1 + 2 + 3 + … + 100
This problem of addition is supposed to be hard for junior school children. But Gauss got the right answer of 5050 in no time.
What made Guass so quick in solving the problem? It was because he found that among the numbers he had to add together, he could get the number 101 fifty times by adding 1 and 100, 2 and 99, and so on. Therefore, the solution to the problem is 50 times of 101, thus 5050.
Gauss solved the maths problem quickly by discovering rules in algorithm. Do you find anything interesting in this story?
In fact, we can also compute the sum of a series of consecutive numbers with the same method i.e., 1+2+3....+n. The formula is also used to solve problems of general terms in trigonometry.