begin array c c text Age in years amp 10 amp 11... - JAMB Mathematics 1994 Question
(\begin{array}{c|c} \text{Age in years} & 10 & 11 & 12 \ \hline \text{Number of pupils} & 6 & 27 & 7\end{array})
The table above shows the number of pupils in each age group in a class. What is the probability that a pupil chosen at random is at least 11 years old?
A
\(\frac{27}{40}\)
B
\(\frac{17}{20}\)
C
\(\frac{33}{40}\)
D
\(\frac{3}{20}\)
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Correct Option: B
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