Question

You are writing a test of 40 objective type questions. Each question carries 1 mark.Find the probability of marks you may get to be in multiple of 5 ?

Answer 1

Answer:

Step-by-step explanation:

There are 8 multiples of five between 0 and 40

And each question carries 1 mark

So, the probability is 8/40 = 1/5

Answer 2

P(getting a multiple of 5) $=\dfrac{1}{5}$.

Step-by-step explanation:

Given,

The number of objective type questions = 40

To find, the probability of marks you may get to be in multiple of 5 = ?

Total number of possible outcomes = 40

The factors of multiple of 5 are:

5, 10, 15, 20, 25, 30, 35 and 40

The number of favourable outcomes = 8

∴ Probability $=\dfrac{The number of favourable outcomes}{Total number of possible outcomes}$

P(getting a multiple of 5) = $\dfrac{8}{40}$

$=\dfrac{1}{5}$

Hence, P(getting a multiple of 5) $=\dfrac{1}{5}$.