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MATHEMATICS

JAMB 2018 - Question 27

Mathematics 2018 JAMB Past Questions - Question 27: What is the probability of selecting a student from the group that scored 2 or 3Mark 012345Frequency 1 27543

The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.

What is the probability of selecting a student from the group that scored 2 or 3Mark 012345Frequency 1 27543

A: 1/11

B: 5/22

C: 7/22

D: 6/11

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Correct Answer

Explanation

P (students scoring 2) = 7/22P (students scoring 3) = 5/22P (students scoring 2 or 3 = 7/22 + 5/22= 12/22 = 6/11