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There are 10 lamps in a hall, Each one o...

There are 10 lamps in a hall, Each one of them can be switched on independently. Find the number of ways in which the hall can be illuminted,
Thinking Process : Total numbers of ways to lightned room is out of given n bulbs at least one or all bulls are lightened. we get total number of ways using following fromula.

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` = 1023`
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KUMAR PRAKASHAN-PERMUTATIONS AND COMBINATIONS-NCERT EXEMPLAR PROBLEMS (SHORT ANSWER TYPE QUESTIONS)
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