" If "f(x)={[1,,x" is rational "],[2,,x" is irrational "]," then "

If f(x)={x,x is rational 1-x,x is irrational , then f(f(x)) is

If f(x)={x ,x is rational 1-x ,x is irrational ,then f(f(x)) is

If f(x)={x ,x is rational 1-x ,x is irrational ,then f(f(x)) is

If f(x)={x ,x is rational 1-x ,x is irrational ,then f(f(x)) is

If f(x) = {{:(x,"x is rational"),(1-x,"x is irrational"):} then f(f(x)) is a) x in R b) {{:(x,"x is irrational"),(1-x,"x is rational"):} c) {{:(x,"x is rational"),(1-x,"x is rational"):} d)none of these

If f(x)={x, when x is rational,1-x, when x is irrational,then

If f(x)={x^(2) if x is rational and 0, if x is irrational }, then

Let f:R to R be defined by f(x)={:{(x, x " is irrational"),(1-x, x " is rational"):} then f is........