4. In how many ways can a 10- question true-false test be answered if every question must be answered? What if it is al right to leave questions unanswered?

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.CR: Chapter Review
Problem 69E: In how many ways can 10 teenagers be seated at a round table if 2 girls wish to sit with their...
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why is the answer: 2^10  ?? why not 10^2 or anything? I am very confused TT

4. In how many ways can a 10-
question true-false test be answered if
every question must be
answered? What if it is al right to
leave questions unanswered?
Transcribed Image Text:4. In how many ways can a 10- question true-false test be answered if every question must be answered? What if it is al right to leave questions unanswered?
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