Posted by **Danielle** on Sunday, October 6, 2013 at 11:50pm.

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?

(b)The professor shakes hands with each member of the seminar and in a different sequence each time. How many sequences of handshakes are possible?

sequences

- Math -
**Reiny**, Sunday, October 6, 2013 at 11:56pm
a) how about C(7,2) = 21

b) You mean only the prof shakes hands?

And he does it again and again?? Silly question, anyway....

In one specific sequence there are 7 handshakes

if the prof shakes hands with each of the 7 members.

Now if we "arrange" that sequence in all its permutations,

the total number possible sequences = 7! = 5040

- Math -
**hemon**, Sunday, November 13, 2016 at 10:51am
in a seminar there were twelve people. if each shook their hand all others,how many times were the hands shaken altogether?

## Answer This Question

## Related Questions

- math - Suppose the 435 members of the house of representatives are placed on ...
- math help - In 2011 a spots club offers its members three types of activities: ...
- Math - if 15 people met at a party and all shook hands with one another, how ...
- Data management - The camera club has 5 members, and the math club has 8 members...
- Math - Members at a yoga school pay $8 per class plus a one-time $90 membership ...
- economics - The 31 members of the board of the Student S. Inc. are about to take...
- Math - The manager of the ice cream shop noticed that 90% of all club members ...
- MATH CLASS 6th grade - The manager of the ice cream shop noticed that 90% of all...
- math - Suppose the 435 members of the House of Representatives are placed on ...
- MATH CLASS 6th grade - Every month the Incredible Ice Cream Shop sends a card ...

More Related Questions