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Here and in the next video we will analyze the theory of numbers in the framework of the school course. In short, we are talking about problems №19 USE in mathematics!
TASK TO ALL VIDEOS: wall-135395111_8104
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UPD. The sum of the numbers of each subset by 1:19 is 299 * 25.
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3 + 4 + 5 = 12
In the coming days we will analyze the theory of numbers in the framework of the exam. Task number 19, if that. There was already an introductory video on the topic with useful resources and tips ( wall-135395111_306), another task was dismantled in the early version. Now we get down to business thoroughly!
Condition. We call a set of numbers good if it can be divided into two subsets with the same sum of numbers.
a) Is the set {100; 101; 102; ...; 199} good?
b) Is the set {2; four; eight; ...; 2 ^ 200} good?
c) How many good four-element subsets of the set {3; four; five; 6; eight; ten; 12}?
MORE STEPS ON THE THEORY OF NUMBERS
1. The most difficult task on KZbin: • #141. СОЧНАЯ ЗАДАЧА ПО...
2. A beautiful task from the exam: • #151. КРАСИВАЯ ЗАДАЧА ...
#Exam mathematics #arithmetic