Question

Question No. 1
In a party of n people, each person greets the other
with a namaste only once. Which of the following
formula correctly represents the total number of
namaste gesture performed in the party?
1. n(n - 1)/2


2. n(n - 1)
3. n(n+1)/2

4. n(n + 1)​

Answer 1

Answer:

4) n(n + 1)

Hope it's helpful to you

Answer 2

Answer:

1. n(n - 1)/2

Because n number of people can greet n-1 number of people and so on