Question

Сколько двухзначных чисел можно составить из цифр 1230 не повторялись

Answer 1

12,30,23,21,03,32
Как-то так)

Answer 2

12,13,10,21,23,20,31,32,30

Answer 3

Number of Two-Digit Numbers from the Digits 1, 2, 3, 0

To find out how many two-digit numbers can be formed from the digits 1, 2, 3, and 0 without repetition, we can use the permutation formula, which is given by:

nPr = n! / (n - r)!

Where: - n = total number of items - r = number of items taken at a time - ! = factorial

Using this formula, we can calculate the number of two-digit numbers that can be formed.

The total number of items (n) is 4 (since we have 4 digits: 1, 2, 3, 0), and we want to take 2 at a time (r = 2).

Calculating nPr: 4P2 = 4! / (4 - 2)! 4P2 = 4! / 2! 4P2 = (4 × 3 × 2 × 1) / (2 × 1) 4P2 = 24 / 2 4P2 = 12

So, there are 12 two-digit numbers that can be formed from the digits 1, 2, 3, and 0 without repetition.