Question

Девять чисел записаны в виде таблицы из трех строк и трех столбцов.складывая числа первой строки, ученик получил сумму 818, числа второй строки дали в сумме по его подсчетам 819, а третьей строки- 917. Проделав те же вычисления для столбцов, ученик получил суммы 185, 722 и 648. Правильны ли его вычисления?

Answer 1

Так числа в таблице не меняются то сумма всех чисел остается постоянной
т.е. сумма трех столбцов равна сумме трех строчек
значит
818+819+917=
=185+722+648
2554=1555 а это неверно
значит ученик допустил ошибку

Answer 2

Analysis of the Problem

The problem states that there are nine numbers arranged in a table with three rows and three columns. The student calculated the sum of the numbers in each row and each column. The sums for the rows were 818, 819, and 917, while the sums for the columns were 185, 722, and 648. The question is whether the student's calculations are correct.

Solution

To determine if the student's calculations are correct, we need to verify if the sums of the rows and columns match the given values. Let's calculate the sums and compare them to the given values.

The sums of the rows are as follows: - First row: 818 - Second row: 819 - Third row: 917

The sums of the columns are as follows: - First column: 185 - Second column: 722 - Third column: 648

Comparing these calculated sums to the given values, we can see that the student's calculations are incorrect. The sums of the rows and columns do not match the values provided.

Conclusion

Based on the calculations, the student's calculations are incorrect. The sums of the rows and columns do not match the given values.