Question on: JAMB Mathematics - 2007
(\begin{array}{c|c} \text{Age in years} & 10 & 11 & 12\
\hline \text{No. of pupils} & 6 & 27 & 7\end{array})
the table above shows the number of pupil 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
\(\frac{3}{30}\)
C
\(\frac{17}{20}\)
D
\(\frac{33}{40}\)
Ask EduPadi AI for a detailed answer
Correct Option: C
Total number of pupils = 6 + 27 + 7 = 40
Number of pupils that are at least 11 years old = 27 + 7
= 34
therefore prob. (at least 11 years) = (\frac{34}{17})
= (\frac{17}{20})
Add your answer
Please share this, thanks!
No responses