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UPSC 2013 CDS 1 Math Paper

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Question : 94

Total: 100

Which of the following are the examples of discrete variables?
1. Number of errors per page in a book.
2. Height of individuals measured in cm.
3. Waiting time to failure of electric bulbs,
4. Number of leaves on branches of a tree.
Select the correct answer using the code given below:

1 only
1 and 4
3 and 4
2 and 4

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