Question

Определи, сколькими различными способами учитель может вызвать к доске Риту, Санту, Марию, Настю, Веру.

Answer 1

Ответ:

15-20 способами

Объяснение:

Рита....

Answer 2

Calculating the Number of Ways to Call Students to the Board

To calculate the number of different ways a teacher can call students to the board, we can use the concept of permutations. A permutation is an arrangement of objects in a specific order. In this case, we want to find the number of ways the teacher can call the students to the board in a specific order.

Using Permutations to Calculate the Number of Ways

To calculate the number of different ways the teacher can call the students to the board, we can use the formula for permutations. The formula for permutations of n objects taken r at a time is given by: nPr = n! / (n - r)!

Where: - n is the total number of objects (in this case, the total number of students) - r is the number of objects taken at a time (in this case, the number of students to be called to the board) - n! represents the factorial of n, which is the product of all positive integers from 1 to n

Applying the Formula

In this case, the teacher wants to call 5 specific students to the board: Ritu, Santu, Maria, Nastya, and Vera. Therefore, n = 5 (total number of students) and r = 5 (number of students to be called to the board).

Using the formula for permutations: 5P5 = 5! / (5 - 5)!

Calculating: 5P5 = 5! / 0! = 5! / 1 = 5! = 5 x 4 x 3 x 2 x 1 = 120

Conclusion

Therefore, there are 120 different ways the teacher can call the students Ritu, Santu, Maria, Nastya, and Vera to the board in a specific order.