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The U.S. Open Women's Singles Championship begins with 128 players. The players compete in this single-elimination tournament until there is 1 winner. How many rounds of matches must be scheduled in order to complete the tournament

Sagot :

Using a geometric sequence, it is found that 7 rounds must be scheduled in order to complete the tournament.

What is a geometric sequence?

A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.

The nth term of a geometric sequence is given by:

[tex]a_n = a_1q^{n-1}[/tex]

In which [tex]a_1[/tex] is the first term.

In this problem, the first round has 128 players, and each round, the players who lose a game go home, hence the common ratio is of q = 0.5.

Then, the geometric sequence for the number of players after n rounds is given by:

[tex]a_n = 128(0.5)^n[/tex]

In the final round, there is one player, hence:

[tex]1 = 128(0.5)^n[/tex]

[tex](0.5)^n = \frac{1}{128}[/tex]

[tex](0.5)^n = \left(\frac{1}{2}\right)^7[/tex]

n = 7

7 rounds must be scheduled in order to complete the tournament.

More can be learned about geometric sequences at https://brainly.com/question/11847927

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