Question

what are power sets​

Answer 1

Step-by-step explanation:

An object is placed in front of a concave mirror of focal length 20cm. The image formed is 3 times

the size of the object. Calculate two possible distances of the object from the mirror.

Answer 2

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In set theory, the power set (or powerset) of a Set A is defined as the set of all subsets of the Set A including the Set itself and the null or empty set. It is denoted by P(A). Basically, this set is the combination of all subsets including null set, of a given set.

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