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  4. A biased dice was rolled 800 times. The frequencies of the various outcomes are given in the table below. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/mathematics/aa2949c9f7b80d2b2cbc383da4e076da-.jpeg /> When the dice is rolled, the probability of getting a number which is a perfect square is (approximately).

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Q. A biased dice was rolled 800 times. The frequencies of the various outcomes are given in the table below.
image
When the dice is rolled, the probability of getting a number which is a perfect square is (approximately).

Probability

Solution:

The possible perfect squares which can be obtained are 1 and 4 . Required probability = probability (obtain- ing 1 or 4$)=$ Probability (obtaining 1$)+$ probability (obtaining 4)
$=\frac{150}{800}+\frac{75}{800}=\frac{225}{800}=\frac{9}{32}$