Two fair dice are rolled. What is the probability that the sum is at least $10$ ?

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For events $A$ and $B$ : $P (A) = 0.5$ , $P (B) = 0.3$ and $P (A \cup B) = 0.65$ . What is $P (A \cap B)$ , and are $A$ and $B$ independent?
In a school, $60%$ of the students have a laptop and $25%$ have both a laptop and a tablet. A student with a laptop is chosen. What is the…
A bag holds $5$ red and $3$ green balls. Two balls are drawn without replacement. What is the probability that they have the same colour?
A fair coin is tossed $4$ times. What is the probability of at least one head?
Events $A$ and $B$ are mutually exclusive with $P (A) = 0.3$ and $P (B) = 0.45$ . What is $P (A \cup B)$ ?
Events $A$ and $B$ are independent with $P (A) = 0.4$ and $P (B) = 0.5$ . What is $P (A \cup B)$ ?