Sets, Relations & Functions · JEE Main previous year questions

2020 26 questions

1. Q212020 · 7 Jan 2020 · Shift 2· Numerical answer

   Let $X=\{n\in \mathbb{N}:1\le n\le 50\}$. If $A=\{n\in X:n\text{ is a multiple of }2\}$ and $B=\{n\in X:n\text{ is a multiple of }7\}$, then the number of elements in the smallest subset of X containing both A and B is _______.

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   Answer: 29