A spinner is numbered from 1 through 10 with each number equally likely to occur. What is the probability of obtaining a number less than 2 or greater than 7 in a single spin?

Solution:

Given,

n(s) = 10

Let A be the event of obtaining a number less than 2 or greater than 7 in a single spin.

A = 1,8,9,10

We know that

n(A) = 4

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

Probability(Event) = Favorable Outcomes/Total Outcomes

P(A) =n(A)/n(s)

4/10 = 2/5

Therefore, P(A) = 2/5.

A spinner is numbered from 1 through 10 with each number equally likely to occur. What is the probability of obtaining a number less than 2 or greater than 7 in a single spin?

Summary:

A spinner is numbered from 1 through 10 with each number equally likely to occur. The probability of obtaining a number less than 2 or greater than 7 in a single spin is 2/5.