Answer:
Step-by-step explanation:
Given
There are 52 cards in total
there are total of 13 pairs of same cards with each pair containing 4 cards
Probability of getting a pair or three of kind card=1-Probability of all three cards being different
Probability of selecting all three different cards can be find out by selecting a card from first 13 pairs and remaining 2 cards from remaining 12 pairs i.e.

for first card there are 52 options after choosing first card one pair is destroyed as we have to select different card .
For second card we have to select from remaining 12 pairs i.e. 48 cards and so on for third card.
Required Probability is 

-10-f=-6f+10
-f+6f=10+10
5f=20
F=4
Answer:
10*(9-5)
Step-by-step explanation:
Answer:
Think the answer will just be 5
Step-by-step explanation:
I don't use step by step so yeah
Answer:
165
Step-by-step explanation:
Put the extra half rectangle in the empty space. It will end up being a perfect rectangle, then you did the area like you usually do..:
22 x 7.5.
=165
Good luck, hope i helped