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

વિધેય \(f:\{1,2,3,4\} \to \{1,2,3,4,5,6\}\) કેટલા મળે કે જેથી \(f (1)+ f (2)= f (3)\) થાય.

  1. A \(60\)
  2. B \(90\)
  3. C \(108\)
  4. D \(126\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(90\)

Step-by-step Solution

Detailed explanation

\(A =\{1,2,3,4\}\) \(B =\{1,2,3,4,5,6\}\) Here \(f(3)\) can be 2, 3, 4, 5, 6 \(f (3)=2,( f (1), f (2)) \rightarrow(1,1) \rightarrow 6 \text { cases }\) \(f (3)=3,( f (1), f (2)) \rightarrow(1,2),(2,1)\) \(\rightarrow 2 \times 6=12 \text { cases }\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app