general Maths Puzzle

There is a shortage of tubelights, bulbs and fans in a village - Kharghar. It is found that
* All houses do not have either tubelight or bulb or fan.
* exactly 19% of houses do not have just one of these.
* atleast 67% of houses do not have tubelights.
* atleast 83% of houses do not have bulbs.
* atleast 73% of houses do not have fans.

What percentage of houses do not have tubelight, bulb and fan?

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general Other Question
A worker earns a 5% raise. A year later, the worker receives a 2.5% cut in pay, & now his salary is Rs. 22702.68
What was his salary to begin with? What is the remainder left after dividing 1! + 2! + 3! + ? + 100! By 7?
Think carefully !!!