How many two-person conversations can occur at a party with 150 people?     conversations

Hello! if you have 150 people and you want to see how many two-person conversations are, then you need to see the combinatory between 150 and 2.

The combinatory between two numbers A and B is Where the combinatory between two numbers is all the possible combinations of A into groups of size B.

Then for 150 and 2, we have

So you have 11175 possible conversations.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%