Proposed Exercises
For a better understanding, solve the following tasks:
1. Carl Friedrich Gauss was a distinguished German mathematician known for his scientific achievements.
Among them, he showed that the
sum of the first n natural numbers can be calculated using the formula:
Task. Read a natural number
n from the keyboard. Display the sum of the first
n numbers.
2. Read two non-zero, different digits from the keyboard. Display the two numbers that can be formed with these digits.
3. Create a program that reads two non-zero natural numbers from the keyboard
and displays their sum, difference, product, quotient, and remainder.
4. A German Shepherd ran
n laps on a standard-sized tennis court:
23.77m x
8.23m. What distance did it cover?
Hint. Pay attention to the perimeter. Only the number of laps, denoted by
n, is read from the keyboard.
5. Read a natural number consisting of exactly three digits. Display the number with all its digits decreased by
1.
Example. For the number
359, your code will display
248.
6. Read a natural number consisting of exactly two digits. Display the sum of the cubes of its digits.
Example. For the number
49, your code will display
43+93, which is
793.
7. Read two natural numbers into the variables
x and
y. Print the value of the expression:
x2 + y2 - 23.
Good luck!
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