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Look at the cumulative frequency distribution table given below:

Monthly Income (in Rs.)
Number of families
More than 10000
100
More than 14000
85
More than 18000
69
More than 20000
50
More than 25000
37
More than 30000
15

Number of families having income ranges between Rs.20000 to Rs.25000 is

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answer is C.

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Detailed Solution

The given frequency distribution table is:

Monthly Income (in Rs.)	Number of families
More than 10000	100
More than 14000	85
More than 18000	69
More than 20000	50
More than 25000	37
More than 30000	15

We see from the table that the number of families having an income of more than Rs.20000 is 50 and the number of families having income of more than Rs.25000 is 37.
Hence, the number of families having income ranges between Rs.20000 to Rs.25000 is,

= 50 − 37 = 13

Thus, the number of families having income ranges between Rs.20000 to Rs.25000 is 13.
Therefore, the correct answer is option 3.

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