The number of non-empty subsets of the set $\{1, 2, 3, 4\}$ is
$15$
$14$
$16$
$17$
(a) The number of non- empty subsets = ${2^n} – 1$
${2^4} – 1 = 16 – 1 = 15$.
Which of the following pairs of sets are equal ? Justify your answer.
$A = \{ \,n:n \in Z$ and ${n^2}\, \le \,4\,\} $ and $B = \{ \,x:x \in R$ and ${x^2} – 3x + 2 = 0\,\} .$
Which of the following are sets ? Justify your answer.
The collection of ten most talented writers of India.
Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:
$10 \, ………\, A $
Write the following sets in the set-builder form :
${\rm{\{ 2,4,8,16,32\} }}$
The collection of questions in this chapter.
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