The scale of a blueprint is 3 inches : 10 feet. On the blueprint, a house is 9 inches
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The discriminant is
which is 0.
Since the discriminant is 0, there is only one real solution.
Consider that the experimental probability of an event is based upon the previous trials and observations of the experiment.
The experimental probability of occurrence of an event is given by,
As per the problem, there are a total of 1230 trials of rolling a dice.
And the favourable event is getting a 2.
The corresponding experimental probability is calculated as,
Thus, the required probability is 13.98% approximately.
Theref