Question

A number is chosen at random from 1 to 10. Find

the probability of selecting 4 or a factor of 6.
Step by step.

Answer 1

`\boxed{(1)/(2) }`

Explanation:

There are total 10 outcomes.

`1,2,3,4,5,6,7,8,9,10`

The probability of selecting 4 is 1 outcome out of total 10 outcomes.

Factors of 6 are
`1,2,3,6`.

These are 4 outcomes out of total 10 outcomes.

The probability of selecting 4 or a factor of 6 is:

`\displaystyle (1)/(10) +(4)/(10) =(5)/(10) =(1)/(2)`

Answer 2

1/2

Explanation:

The possible outcomes are

1,2,3,4,5,6,7,8,9,10

Factors of 6 are 1,2,3,6

or a 4

1,2,3,4,6 are the outcomes we want

There are 5 "good" outcomes

P( 4 or a factor of 6) = "good" outcomes/ total

= 5/10

=1/2