Geometry (sorta)

posted by .

seven people meet and shake hands with eachother- how many handshakes occur?

(second question)
using inductive reasoning, write a formula for the number of handshakes if the number of people is n

  • Geometry (sorta) -

    nCr = n!/(r!*(n-r)!) Think about that.
    You need to go through the reasoning. Try making a diagram with 4 folks (A,B,C,D) shaking hands

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    If 8 people went to a party and each person shook hands at least one time. how many total hand shakes would there be?
  2. Math

    On the first day of school everyone wants to shake hands. How many handshakes in all?
  3. Math

    seven people meet and shake hands with eachother- how many handshakes occur?
  4. Education Psychology

    Steve ponders a math problem that asks for the number of handshakes if six people at a meeting shake hands just once with each other. The problem then asks for the number of handshakes if there are n people. Steve arrives at the correct …
  5. MAth

    14 students in an Algebra class were asked to shake hands with each other. Each student shook hands with each of the other students exactly once. How many handshakes occured in this class?
  6. Math

    A sociology seminar has 7 members (a) They begin each meeting with each member shaking hands with all the other members. No one shakes another member's hand twice. How many handshakes take place?
  7. Algebra

    A scientist wants to research the potential spread of germs by contact. She knows that the number of possible handshakes within a group of n people is given by the equation N=1/2(n^2-n). Everyone at a party shook hands. There were …
  8. Math(Please Help!)

    An undisclosed number of friends gather for dinner. Each person shakes each other persons hand exactly once. How many handshakes occur?
  9. Math1

    An undisclosed number of friends gather for dinner. Each person shakes each other persons hand exactly once. How many handshakes occur?
  10. math

    there are 8 people in a committee. each time they meet they shake hands with each other so that each person shakes everyones hand once each time they meet how many handshakes are there

More Similar Questions