Class 11MathematicsPermutations and CombinationsDefinition of permutation, Number of permutations with or without repetition, Conditional permutations
EasyThere are $10$ lamps in a hall. Each one of them can be switched on independently. The number of ways in which the hall can be illuminated is
- A$10^2$
- B$1023$
- C$2^{10}$
- D$10!$
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