# maths

posted by
**sharan**
.

The mapping is f:N →N, given by F(n)= 2n^3=1,n belongs to N.

A. one-one and onto

B. onto not one-one

C. one-one not onto

D. neither one-one nor onto

posted by
**sharan**
.

The mapping is f:N →N, given by F(n)= 2n^3=1,n belongs to N.

A. one-one and onto

B. onto not one-one

C. one-one not onto

D. neither one-one nor onto