Let A={1,2,3,4,5,6,7}.Define B={T⊆A: either 1∉T or 2∈T} and C={T⊆A:T the sum of all the elements

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Let A={1,2,3,4,5,6,7}.Define B={T⊆A: either 1∉T or 2∈T} and C={T⊆A:T the sum of all the elements of T is a prime number}. Then the number of elements in the set B∪C is JEE Mains 2022

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  1. DS Negi Maths (NITian)
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