anonymous
  • anonymous
4 people come to a party and shake hands with each other. If each person shakes the hand of every other​ person, how many handshakes​ occur?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@peachpi
anonymous
  • anonymous
@phi @welshfella @Nnesha
amilapsn
  • amilapsn
3+2+1

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More answers

anonymous
  • anonymous
6
anonymous
  • anonymous
lol
amilapsn
  • amilapsn
Lets assume the 4 people are ABC and D ok?
anonymous
  • anonymous
ok
anonymous
  • anonymous
hello
amilapsn
  • amilapsn
So A shakes hand with the three others: BC and D
anonymous
  • anonymous
@peachpi
anonymous
  • anonymous
ok
anonymous
  • anonymous
ok
amilapsn
  • amilapsn
then B shakes hand with C and D
anonymous
  • anonymous
kk
anonymous
  • anonymous
kk
amilapsn
  • amilapsn
At last we have to add the shaking hand between C and D
anonymous
  • anonymous
5 ?
amilapsn
  • amilapsn
So if we add all we get 3+2+1=?
anonymous
  • anonymous
6
amilapsn
  • amilapsn
Right try sketching the situation :-)
anonymous
  • anonymous
is that answer
amilapsn
  • amilapsn
yep
amilapsn
  • amilapsn
Like this:-) https://sketch.io/render/sketch55e0bed1ee9f1.png
amilapsn
  • amilapsn
How many double arrows are there?
amilapsn
  • amilapsn
They are the number of hand shakes :-)

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