document.write( "Question 842125: ther are 10 bulbs in a hall.each one of them can be switched on independently.in how many ways the hall can be illuminated?please tell \n" ); document.write( "
Algebra.Com's Answer #507366 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,
\n" ); document.write( "10C0 + 10C1 + 10C2 + 10C3 + 10C4 + 10C5 + 10C6 + 10C7 + 10C8 + 10C9 + 10C10 ways \n" ); document.write( "
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