Step-by-step explanation:

Answer:
The number of ways to select 2 cards from 52 cards without replacement is 1326.
The number of ways to select 2 cards from 52 cards in case the order is important is 2652.
Step-by-step explanation:
Combinations is a mathematical procedure to compute the number of ways in which <em>k</em> items can be selected from <em>n</em> different items without replacement and irrespective of the order.

Permutation is a mathematical procedure to determine the number of arrangements of <em>k</em> items from <em>n</em> different items respective of the order of arrangement.

In this case we need to select two different cards from a pack of 52 cards.
- Two cards are selected without replacement:
Compute the number of ways to select 2 cards from 52 cards without replacement as follows:



Thus, the number of ways to select 2 cards from 52 cards without replacement is 1326.
- Two cards are selected and the order matters.
Compute the number of ways to select 2 cards from 52 cards in case the order is important as follows:




Thus, the number of ways to select 2 cards from 52 cards in case the order is important is 2652.
Looks like the given function is

Recall that for |<em>x</em>| < 1, we have

We want the series to be centered around
, so first we rearrange <em>f(x)</em> :

Then

which converges for |(<em>x</em> - 4)/5| < 1, or -1 < <em>x</em> < 9.
13g+13 sorry if this is wrong
Step-by-step explanation:
$15 initial fee. $2 per hour. $35 limit.
35 - 15 = 20
After the initial fee, he has $20 left.
20 ÷ 2 = 10
He can rent the metal detector for 10 hours.