+380 Stanry
Apr 14, 2025, 3:16:52 PM +380 Stanry
Apr 14, 2025, 2:59:23 PM Apr 13, 2025
+380 A permutation of the numbers (1,2,3,\dots,n) is a rearrangement of the numbers in which each number appears exactly once. For example, (2,5,1,4,3) is a permutation of (1,2,3,4,5).
Find the number of permutations (x_1, x_2, \dots, x_8)
read more .. +380 Find the number of sequences (a_1, a_2, a_3, \dots, a_8) such that:
* a_i \in \{1, 2, 3, 4, 5, 6, 7, 8\} for all 1 \le i \le 8.
* Every number1, 2, 3, 4, 5, 6, 7, 8 appears at least once in the sequence.
+380 A standard deck of 52 cards has 13 ranks (Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King) and 4 suits (spades, hearts, diamonds, and clubs), such that there is exactly one card for any given rank and suit.
You are dealt a hand of
read more .. +380 +380 Apr 12, 2025
+380 
+1517 +1517 +1517 +1517 
+802 +802 +802 +802 +802 
+1782 +1782 A permutation of the numbers (1,2,3,\dots,n) is a rearrangement of the numbers in which each number appears exactly once. For example, (2,5,1,4,3)$ is a permutation of (1,2,3,4,5).
Let \pi = (x_1,x_2,x_3,\dots,x_n) be a permutation
read more .. +1782 Apr 11, 2025
+1782 Apr 10, 2025
+582 +582 +582 Apr 9, 2025
+164 +164 Apr 8, 2025
+164 +164 
+921 +921 +921 +921 Apr 7, 2025
+950 +950 
+448 +380 Apr 5, 2025
+164 +164 +164 +950 +950 +950 Apr 4, 2025
+950
