# From a pack of 9 cards numbered 1-9, three cards are drawn at random and laid on a table from left to right. What is the probability that the digits are drawn in descending order?

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I know the answer is #1/6# but am unsure how to get to it.

Thanks!

I know the answer is

Thanks!

##### 1 Answer

Oct 16, 2017

#### Explanation:

The number of cards in the pack is irrelevant - they just need to be distinct numbers.

Whichever

The total number of different possible orders of the

So the probability of drawing the cards in descending order is:

#1/(3!) = 1/6#