Ten children take part in a tournament. Each one has to play every other one.How many games they must play??
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Answered by
0
9 games have to be played to play with everyone.....
Answered by
5
By using the formula
n(n-1)/2 the answer will be
10(10 -1)/2
= (10^2 - 10)/2
= (100 -10)/2
= 90/2
= 45
n(n-1)/2 the answer will be
10(10 -1)/2
= (10^2 - 10)/2
= (100 -10)/2
= 90/2
= 45
sreetheertha:
why this formula
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