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266. Bachelor girls


There are 70 clerks working in a Chartered Accountant's office,
of which 30 are females.

Of them,

1. 30 clerks are married.

2. 24 clerks are above 25 years of age.

3. 19 married clerks are above 25 years, of which 7 are males.

4. 12 males are above 25 years of age and

5. 15 males are married.

How many bachelor girls are there and how many of these are above 25 years of age?



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