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# In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

Option :

Explanation:

Solution:
$\begin{array}{rl}& P\left(\text{getting}\phantom{\rule{thinmathspace}{0ex}}\text{a}\phantom{\rule{thinmathspace}{0ex}}\text{prize}\right)\\ & =\frac{10}{10+25}\\ & =\frac{10}{35}\\ & =\frac{2}{7}\end{array}$