Weekend brain drill. The first to get the answer wins a prize:

At a birthday party, everyone shook hands with everybody else. There were 120 handshakes. How many people were at the party?

Can't believe I got FTc...
I dedicate this F.T.C to God and to my bae .. Make I send my account number to collect my FTC money






The answer is










16...

12


this is still not correct anyways but it's the closest.

12 people will shake hands 11 times each

then, 11 X 12 people = 121

Unless the OP is playing pranks...

Modified:
Thanks @BankoleCruise for that correction:

11 people shake all hands 10 times each giving a total of 110 handshakes.

12

16 my answer
a lay man solution(wuru wuru to the answer)
1 person=0 handshakes
2 people= 1 handshakes
3 people=3 handshakes
4 people=6 handshakes
5 people=10 handshakes

Note: the number of handshakes per person which is number of people minus one.

E.g for 4 people number of handshake(s) per person is 3. So if i multiply no of people and no of handshake(s) per person. 4*3=12 so you nw divide by 2. 12/2=6
so 4 people = 6 handshakes.
(try other number values like the case of 2 or 3 e.t.c people using the same step)
in the case of 120 handshakes. The question should be what will i divide by 2 that will give 120 the answer is 240.

Find Two numbers if you multiply them its equal to 240, and when you subtract them it gives you one. Those numbers are 16&15.

Therefore number of people= 16
no of handshakes person=15

Nuezha:
12.


this is still not correct anyways but it's the closest.

12 people will shake hands 11 times each

then, 11 X 12 people = 121

Unless the OP is playing pranks...

good thinking, but not there

Nuezha:
12.

this is still not correct anyways but it's the closest.
12 people will shake hands 11 times each
then, 11 X 12 people = 121
Unless the OP is playing pranks...

11 x 12=132

Still waiting for more answers

.

J

16

121

Typing....

There are 16 people

if its 1 person there will be 0 handshakes
2 - 1 handshake
3 - 3 handshakes
4 - 6 handshakes
5 - 10 handshakes

you'll notice the number of handshakes is increasing by one as the series progresses, follow it up till you have 120 handshakes you will have 16 people.

Ask Google!

0+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15=120

Therefore the answer is 16 persons

60

Am coming

12?

thinking...

16 people

what concerns me with shaking when i am in a party?

Iamdagreatguy:
Weekend brain drill. The first to get the answer wins a prize:

At a birthday party, everyone shook hands with everybody else. There were 120 handshakes. How many people were at the party?

what's the prize?

I know the answer

12 peeps were at the party.

I'm coming let me finish shaking hands wit dem

Modified: I think the answer is 16.

I don't drill my brain at night

op give us the answer

12 people will shake hands 11 times each
then, 11 X 12 people = 121