1.Relation and Function
hard

एकैकी फलन

$f :\{ a , b , c , d \} \rightarrow\{0,1,2, \ldots, 10\}$

की संख्या, ताकि $2 f ( a )- f ( b )+3 f ( c )+ f ( d )=0$

है, होगी

A

$32$

B

$31$

C

$22$

D

$89$

(JEE MAIN-2022)

Solution

$2 f(a)+3 f(c)=f(d)-f(b)$

Using fundamental principle of counting

Number of one-one function is $31$

Standard 12
Mathematics

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