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 
The answer is 2^12 = 4096.
Look at a tree diagram. With one spin there are two possible outcomes (branches). Every time you spin, each of the branches split into two more branches.
With 12 spins, first there are 2 branches, then 2*2, then 2*2*2, ... In the end it's 2^12
No, it does not have a straight line. (A)
It very well could be, but not necessarily. What if q = 10, s = 8, and t = 6?
The statement is that q is less than s, and s is less than t (which therefore also means q is less than t).
However, when we substitute (replace) all the letters with the values we assigned them, we can find that the expression becomes:
10 < 8 < 6
This clearly isn’t right, as 10 is the greatest number there, and 8 is definitely less than 10 and greater than 6.
