Class JEE Mathematics Sets, Relations, and Functions Q #1124
COMPETENCY BASED
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4 Marks 2022 JEE Main 2022 (Online) 25th July Evening Shift NUMERICAL
Let $A=\{1,2,3,4,5,6,7\}$. Define $B=\{T \subseteq A$ : either $1 \notin T$ or $2 \in T\}$ and $C=\{T \subseteq A: T$ the sum of all the elements of $T$ is a prime number $\}$. Then the number of elements in the set $B \cup C$ is ________________.
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