Find the probability that a number selected at random from the numbers 1 to 25 is not a prime number.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D

The numbers from 1 to 25 which are not prime are 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24 and 25.
Thus, we have 16 favourable outcomes out of 25 outcomes.
We know that, Probability of an event E, P(E) = $\frac{number of favourable outcomes}{total number of outcomes}$
Hence, the required probability is $\frac{16}{25}$ .

Suggest Corrections

Similar questions

A number is selected at random from the numbers 1 to 30. The probability that it is a prime number

Q. Find the probability that a number selected at random from the numbers 3, 4, 5, ...., 25 is prime.

Q. A number is selected at random from the numbers 1 to 30. What is the probability that the selected number is a prime number? [CBSE 2014]

(a)

\frac{2}{3}

(b)

\frac{1}{6}

(c)

\frac{1}{3}

(d)

\frac{11}{30}

A number is selected at random from the numbers 1 to 30. What is the probability that the selected nummber is a prime number ?
(a) $\frac{2}{3}$ (b) $9 \frac{1}{6}$ (c) $\frac{1}{3}$ (d) $\frac{11}{30}$

Q. A number is selected at random from the numbers from 1 to 30. Find the probability that the selected number is either even or odd.

Join BYJU'S Learning Program