Function & Set & Possibility question (Solved)
For set A={1, 2, 3, 4, 5}, how many functions f from set A to set A satisfy the following conditions?
(A) n({f(x)|x E A}) = 3
(B) composite function f*f's range have 2 elements.
a) 900 b) 1440 c) 1080 d) 1620 e) 1200
(I'm not English user, so translation might be rough. I want to know how to solve this problem.)
Dnnn
3
Join Matchmaticians Affiliate Marketing
Program to earn up to a 50% commission on every question that your affiliated users ask or answer.
- unanswered
- 133 views
- Pro Bono
Related Questions
- Integrate $\int \frac{1}{x^2+x+1}dx$
- Early uni/college Calculus (one question)
- Vector-valued functions and Jacobian matrix
- Line Integral
- Volume of the solid of revolution for $f(x)=\sin x$
- Get the volume and surface area of the paraboloid $z=4-x^2-y^2$ cut by the plane $z=4-2x$
- Differentiate $f(x)=\int_{\sqrt{x}}^{\sin^2 x}\arctan (1+e^{t^2})dt$
- Calculus Questions - Domains; Limits; Derivatives; Integrals
Questions at this level should come with a bounty.