Elitmus Exam Coding Decoding

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Elitmus Other Question

Q. In a chimpoo zoo there are 1 billion monkeys. The probability of monkeys seen in mango trees is 0.6 and probability of monkeys seen in banana tree is 0.65, then what is minimum percentage of monkeys seen in both the trees??

Options
a) 25%
b) 39%
c) 40%
d) 60%
Q. Please explain I don't understand this question
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