ExamBro
ExamBro
enEnglishhiहिन्दीguગુજરાતી
JEE Mains · Maths · STD 12 - 1. relation and function

ધારોકે \(A =\{1,2,3,4,5\}\) અને \(B =\{1,2,3,4,5,6\}\). તો \(f(1)+f(2)=f(4)-1\) નું સમાધાન કરતા વિધેયો \(f: A \rightarrow B\) ની સંખ્યા \(=.........\)

  1. A \(360\)
  2. B \(361\)
  3. C \(362\)
  4. D \(363\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(360\)

Step-by-step Solution

Detailed explanation

\(f(1)+f(2)+1=f(4) \leq 6\) \(f(1)+f(2) \leq 5\) Case \((i)\) \(f(1)=1 \Rightarrow f(2)=1,2,3,4 \Rightarrow 4\) mappings Case \((ii)\) \(f(1)=2 \Rightarrow f(2)=1,2,3 \Rightarrow 3\) mappings Case \((iii)\) \(f(1)=3 \Rightarrow f(2)=1,2 \Rightarrow 2\) mappings Case \((iv)\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app