What is the minimum number of times that an ordinary deck of playing cards must be shuffled to make the deck random?
A)7
B)1
C)2
D)8
E)It cannot be made random.

Question

Quizplus · Accepted Answer

Shuffling a deck of cards 7 times is generally considered the minimum number to achieve randomness. This is based on mathematical studies, notably by Persi Diaconis, which suggest that fewer shuffles might not sufficiently mix the cards.

What Is the Minimum Number of Times That an Ordinary