Question

A six sided fair die is rolled find the probability of getting an odd number or a prime number

Answer 1

4/6=2/3

therefore probability is 2/3

Answer 2

Step-by-step explanation:

If we rolled a die than the probability of getting no. are: 1, 2, 3, 4, 5 and 6.

=>Total favourable of die = 6

so, in first case;

(i) getting an odd no.

total odd no. between 1 to 6.

are= 3.

$p(e) = \frac{total \: outcomes}{total \: favourable}$

Now, putting on the formula,

$p(e) = \frac{3}{6}$

$here \: we \: get = \frac{1}{2}$

now in the second case;

(ii) getting a prime number.

Total prime no. between 1 to 6 are: 2, 3 and 5.

Total favourable = 6

$p(e) = \frac{total \: outcomes}{total \: favorable}$

now, putting on formula;

$p(e) = \frac{3}{6}$

we get,

$p(e) = \frac{1}{2}$

HERE, GETTING A PRIME NO. = 1/2.

NOW, GETTING AN ODD NO. = 1/2.

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