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Marina CMI [18]
3 years ago
8

There are 25 students in the

Mathematics
1 answer:
4vir4ik [10]3 years ago
4 0

Answer:

ratio 1- 23:25

and the rest i dont know sorry. LOL

Step-by-step explanation:

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In a public show 75 % of seats were filled if there were 600 seats in the hall, how many seats were vacant ?
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In a chess tournament, each player plays every other player exactly once. If it is known that 105 games were played, how many pl
diamong [38]

Answer:

15 players played in the chess tournament.

Step-by-step explanation:

When there are 15 players, the first player plays 14 games and step aside.

remaining 14 player

next player plays 13 games. steps aside

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next player plays 12 games. steps aside

remaining 12 players

next player plays 11 games. steps aside

remaining 11 players

.

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Last player plays 1 game and steps aside

remaining 1 player who will not play against himself.

∴ Sum of all games played

= 14 + 13 + 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 105 games played

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A and E.

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