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# Let a = { ϕ , { ϕ } , 1 , { 1 , ϕ } , 2 } Which of the Following Are True? { 2 { 1 } } ⊄ a - Mathematics

Let $A = \left\{ \phi, \left\{ \phi \right\}, 1, \left\{ 1, \phi \right\}, 2 \right\}$Which of the following are true?$\left\{ 2 \left\{ 1 \right\} \right\} \not\subset A$

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#### Solution

True

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#### APPEARS IN

RD Sharma Class 11 Mathematics Textbook
Chapter 1 Sets
Exercise 1.4 | Q 8.6 | Page 17
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