Discussion

Explanation:

As there are a total of 64 players, in the first round 32 players would be eliminated and 32 players will advance to the 2nd round. 

In the 2^nd round half of 32, i.e., 16 players would be eliminated and 16 will advance to 3^rd round. 

Similarly,

In 3^rd round ⇒ 8 will be eliminated and 8 will advance to 4th round.

In 4^th round (QF) ⇒ 4 will be eliminated and 4 will advance to 5th round.

In 5^th round (SF) ⇒ 2 will be eliminated and 2 will advance to 6th round.

In 6^th round (Final) ⇒ This is final round and winner of the tournament will be decided in this round.

Alternately,

If the number of players in a knock-out tournament is 2^k, then the number of rounds is k.

Here, number of players is 64 = 2⁶, hence number of rounds is 6.

Hence, 6.

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