If, in the first round, all even numbered matches (and none of the odd numbered ones) results in surprise wins, and there are no surprise wins in the second round, then who would be the lowest ranked team facing Brazil in semi-finals?

Switzerland

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Egypt

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Germany

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England

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Solution

The correct option is A
Switzerland

Brazil (1) plays rank 4 in semi-finals (Round 4 - magic number is 5)

But, we know all even numbered matches of round 1 and all even ranked teams lose in round 1, hence lets trace rank 4's path to know which is the LOWEST ranked team that can replace it.

Round 1: 4 + 29 ("Magic number for round 1 is 33=4+29”) $=>$ 29 qualifies and takes 4's place

Round 2: 4 + 13 ("Magic number for round 2 is 17=4+13”)

But, now the round 2 match is not 4 v/s 13 but 29 v/s 13 $=>$ 13 is a better rank team and no upsets occur in round 2 so 13 qualifies and takes 4's place in the next round.

Round 3: 4 + 5 ("Magic number for round 3 is 9=4+15”)

But now here 4 is replaced by 13 so its 13 v/s 5. The winner of this match meets 1 in the next round(Semi-finals). We have the liberty to choose any of these two teams but the choice has to be of the LOWER team hence, choose rank 13 =Switzerland as the ANSWER (a)

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