1.Relation and Function
easy

मान लीजिए कि $S =\{a, b, c\}$ तथा $T =\{1,2,3\}$ है। $S$ से $T$ तक के निम्नलिखित फलनों $F$ के लिए $F ^{-1}$ ज्ञात कीजिए, यदि उसका अस्तित्व है :

$F =\{(a, 2),(b, 1),(c, 1)\}$

Option A
Option B
Option C
Option D

Solution

$S =\{ a , b , c \}, \,\,T =\{1,2,3\}$

$F : S \rightarrow T$ is defined as $F =\{( a , 2),\,( b , 1),\,( c , 1)\}$

since $F ( b )= F ( c )=1$,    $F$ is not one – one.

Hence, $F$ is not invertible i.e., $F ^{-1}$ does not exist.

Standard 12
Mathematics

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