Solve.A test contains 31 questions of which a student must answer 28. In how many ways can the student select the questions to answer?
A. 4495
B. 1.713 x 1032
C. 4.111 x 1033
D. 13,485
Answer: A
Mathematics
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A. 4000 B. 2000 C. 3000 D. 2900
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