Question

Example 2: For each case, decide whether MSN, MCN, and MON (a) M is the set of all stocks that at least doubled in value over the course of a year. N is the set of all stocks that at least tripled in value over the course of a year. (b) M is the set of all stocks that increased in value over the course of a year. N is the set of all stocks that increased by a penny or more as listed on stock exchange over the course of the year. (c) M is the set of all stocks priced $50,000 or higher on January 3, 2017. N is the set of all stocks that priced $50,000 or higher on January 2, 2018.

Answer 1

(a) $M\nsubseteq N$

(b)$M\subseteq N$

(c)$M\subset N$

I have attached the pic in which reasons are mentioned

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