Let A = (x 1 , x 2 ,…..,x 8 ), B = (y 1 , y 2 , y 3 ), the total no. of functions f : A →…
Mathematics · JEE Advanced · NTA Exams — Sets, Relations and Functions
Let A = (x1, x2,…..,x8), B = (y1, y2, y3), the total no. of functions f : A → B that are onto and there are exactly four elements (x) in A such that f(x) = y3, is equal to
- 16 × 8C4
- 14 × 8C4
- 16 × 4C4
- None of these
Answer
(B) 14 × 8 C 4
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