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2 November, 08:44

Three out of seven students in the cafeteria line are chosen to answer survey questions. How many different combinations of three students are possible? 7 35 70 210

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Answers (1)
  1. 2 November, 09:02
    0
    1 2 3 4 5 6 7

    123

    124

    125

    126

    127

    134

    135

    136

    137

    145,

    146,

    147

    156

    157

    167

    234

    235

    236

    237

    245

    246

    247

    256

    257

    267

    345

    346

    347

    356

    357

    367

    456

    457

    467

    567

    The answer is 35
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