1.Relation and Function
easy

ગણ $A$ માં $3$ સભ્ય છે અને $B$ માં $4$ સભ્ય છે . જો $A$ થી $B$ માં એક-એક વિધેય ની સંખ્યા મેળવો.

A

$144$

B

$12$

C

$24$

D

$64$

Solution

(c) The total number of injective functions from a set $A$ containing $3$ elements to a set $B$ containing $4$ elements is equal to the total number of arrangements of $4$ by taking $3$ at a time $i.e.,$  $^4{P_3} = 24$.

Standard 12
Mathematics

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