Destinysills9620 Destinysills9620
  • 21-06-2024
  • Mathematics
Answered

Suppose a True-False test has 20 questions.
a) In how many ways may a student mark the test, if each question is answered?
b) In how many ways may a student mark the test, if 7 questions are marked correctly and 13 incorrectly?
c) In how many ways may a student mark the test, if 10 questions are marked correctly and 10 incorrectly?



Answer :

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