Question

Which of the following Boolean exxpressions tests to see if x is between 2 and 15 (including 2 and 15)? A. (x <15 || x> 2) B. (2 2) && (x<= 15) D. (22)

Answer 1

A. (x < 15 || x > 2)

Step-by-step explanation:

The operator '||' is used for OR operation. it is used in between the conditions and give the result as Boolean (TRUE or FALSE).

There are four possible result:

First condition TRUE, second condition TRUE then result will be TRUE.

First condition TRUE, second condition FALSE then result will be TRUE.

First condition FALSE, second condition TRUE then result will be TRUE.

First condition FALSE, second condition FALSE then result will be FALSE.

In the question:

Option A: (x < 15 || x > 2)

x will be in between the 2 and 15, if it less than 15 and greater than 2. So, the expression follow the condition.

Option B: (2 2) && (x<=15)

it not the correct way to write the condition, (2 2) is not allowed.

Option D: (22)

it also not true. it show the value 22.

Therefore, the correct option is A.