Question

Robin randomly selects a number between 1 and 20. What is the probability that the number selected is the square of a natural number?

Answer 1

Answer:

4/20=1/5

Step-by-step explanation:

All possible perfect square numbers between 1 and 20 are 1,4, 9 & 16.  (squares of 1,2,3 & 4)

Probability that the number between 1 & 20 selected is the square of a natural number=4/20 = 1/5

Answer 2

Concept

All entire numbers, with the exception of zero, are considered natural numbers. In other words, all whole numbers are not natural numbers, but all natural numbers are whole numbers. Natural Numbers = 1,2,3,4,5,6,7,8,9......

Given,

Robin selects a number between 1 to 20.

To Find,

The probability that the chosen integer is the square of a natural number

Solution,

Probability of an event = Favorable outcomes/Total outcomes is the formula for calculating the probability of an occurrence.

Favorable outcomes = 4 {1,4,9,16} in this event.

There are a total of 20 outcomes.

As a result, probability equals 4/20 = 1/5.

As a result, receiving the square of a natural number has a 1/5 chance of happening.