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13 January, 01:57

Ten students need to present their reports. Five can present each day. How many ways can the teacher choose a group of five students to present their reports on the first day? How many ways can the teacher choose a group of 5 students to present on the first day of Marjorie must present on the first day?

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  1. 13 January, 02:07
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    1) Since order does not matter, 10C5 = 252.

    2) I don't think I understand the 2nd question, can you elaborate.
  2. 13 January, 02:07
    0
    1) 252

    2) 126

    you welcome
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