JEE Main 202228 Jun, Morning shiftMathematicsEasySets, Relations and Functions168× since 2002Let a function f : N →\to→ N be defined by f(n)=[2n,n=2,4,6,8,......n−1,n=3,7,11,15,......n+12,n=1,5,9,13,......f(n) = \left[ {\matrix{ {2n,} & {n = 2,4,6,8,......} \cr {n - 1,} & {n = 3,7,11,15,......} \cr {{{n + 1} \over 2},} & {n = 1,5,9,13,......} \cr } } \right.f(n)=2n,n−1,2n+1,n=2,4,6,8,......n=3,7,11,15,......n=1,5,9,13,...... then, f isAOption A. one-one but not ontoBOption B. onto but not one-oneCOption C. neither one-one nor ontoDOption D. one-one and ontoCheckSkip · show solution
