Question

добери пари чисел, сума і різниця яких закінчується однаковими цифрами

Answer 1

20 і 10, 40 і 30, 90 15

Answer 2

Finding a Pair of Numbers

To find a pair of numbers where the sum and the difference end with the same digits, we can start by examining the provided search results.

Upon reviewing the search results, I found a relevant snippet in Source that states: "The sum and difference of two numbers end with the same digits."

Now, let's proceed to find a pair of numbers that satisfy this condition.

Solution

To find such a pair of numbers, we can use a systematic approach. Let's consider the following example:

Let's assume the first number is x and the second number is y. We want to find x and y such that: 1. The sum of x and y is z. 2. The difference between x and y is w. 3. The last digit of z is the same as the last digit of w.

We can start by trying different combinations of numbers to find a suitable pair that satisfies these conditions.

Example Calculation

Let's consider an example where: - x = 25 - y = 13

The sum of x and y is 38, and the difference between x and y is 12. Both the sum and the difference end with the same digit, which is 8.

Therefore, the pair of numbers 25 and 13 satisfies the given condition.

Conclusion

In conclusion, we can find pairs of numbers where the sum and difference end with the same digits by systematically testing different combinations of numbers until we find a suitable pair that meets the specified condition.