Question on: JAMB Mathematics - 2014

(\begin{array}{c|c}

Numbers & 1 & 2 & 3 & 4 & 5 & 6 \

\hline

Frequency & 18 & 22 & 20 & 16 & 10 & 14

\end{array})

The table above represents the outcome of throwing a die 100 times. What is the probability of obtaining at least a 4?

A
\(\frac{1}{5}\)
B
\(\frac{1}{2}\)
C
\(\frac{2}{5}\)
D
\(\frac{3}{4}\)
Ask EduPadi AI for a detailed answer
Correct Option: C

Let E demote the event of obtaining at least a 4

Then n(E) = 16 + 10 + 14 = 40

Hence, prob (E) = (\frac{n(E)}{n(S)})

( = \frac{40}{100})

( = \frac{2}{5})

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