2 years ago

100 computer techies come to a conference Each of them exchanges a buisness card with the others .How many cards are exchanged

Mathematics

2 answers:

lozanna [386]2 years ago

6 0

nation:

Answer:

n(n-1)/2.

So, if there are 100 "techies" then put 100 into the equation.

100(100-1)/2------the equation

100(99)/2------simplified

9900/2------- 100*99

4950-----THE ANSWER!!!

So, there would be 4950 cards exchanged!

Musya8 [376]2 years ago

6 0

The answer is n(n-1)/2 I just took the test.

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Which expression has a value that is 6 times the value of the expression 63 – 3y?

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