Twenty people are to greet each other by shaking hands. How many hand shakes are there?
luckyjoshi615:
19×20/2 =190 man
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Answered by
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one hundred ninety hands ......
hope it helps u
hope it helps u
becoz i don't like maths
i hate maths
no its only because....I know this ....because...4 yrs ago I was a prodigy in maths....
AND now I m just good at it....
oh
nd Don't see my answers xD
I used to do sums of class 9 at class 5.....now I ain't able to score 100 everytime
I will see
plz....plz...plz...
don't get angry again.....lol....but I will see.
Answered by
0
this forms a special system....
19+18+17......+1
=19×20/2=190...hope it helps
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