Consider the following statements 1 The classes of type 15 19 20 24 25 29 etc are exclusive classes ...........

Quantitative Aptitude (CDS) Simplification

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Consider the following statements :

1. The classes of type 15-19, 20-24, 25-29 etc. are exclusive classes.

2. The classes of type 15-20, 20-25, 25-30 etc. are inclusive classes.

Which of the above statements is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 nor 2

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Explanation:

When the lower and the upper class limit is included, then it is an inclusive class interval.
For example - 220 - 234, 235 - 249 ..... etc. are inclusive type of class intervals. When the lower limit is included, but the upper limit is excluded, then it is an exclusive class interval.
For example - 150 - 153, 153 - 156.....etc are exclusive type of class intervals.e.g. 15-20, 20-25 etc
Hence both the statements are incorrect.