Let S=E1,E2…E8 be a sample space of random experiment such that PEn=n36 for every n=1,2….8. Then the number of elements in the set A⊂S:PA≥45 is _____.

Question

Let

S = \{E_{1}, E_{2} \dots E_{8}\}

be a sample space of random experiment such that

P (E_{n}) = \frac{n}{36}

for every

n = 1, 2 \dots . 8

. Then the number of elements in the set

\{A \subset S : P (A) \geq \frac{4}{5}\}

is _____.

Correct Answer

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