2016 · Q94
Consider the following statements :
- 1The classes of type 15-19, 20-24, 25-29 etc. are exclusive classes.
- 2The classes of type 15-20, 20-25, 25-30 etc. are inclusive classes.
Which of the above statements is/are correct ?
Elementary MathematicsStatistics
- A1 only
- B2 only
- CBoth 1 and 2
- DNeither 1 nor 2
Explanation
The classes 15–19, 20–24 are inclusive classes (statement 1 is wrong) and 15–20, 20–25 are exclusive classes (statement 2 is wrong) — the statements have the definitions backwards. So neither statement is correct (option D).