WAEC - Further Mathematics (2008 - No. 29)

Marks 2 3 4 5 6 7 8
No of students 5 7 9 6 3 6 4

The table above shows the distribution of marks by some candidates in a test. If a student is selected at random, what is the probability that she scored at least 6 marks?

\(\frac{3}{40}\)
\(\frac{1}{4}\)
\(\frac{13}{40}\)
\(\frac{27}{40}\)

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