If `P={x:xlt3,inN},` Q=`{x:xle2, inW}` Then find `(PuuQ)xx(PnnQ),` Where W is the set of whole numbers.

Let f:W rarr W, be defined as f(x)=x-1, if x is odd and f(x)=x+1, if x is even.Show that f is invertible.Find the inverse of f, where W is the set of all whole numbers.

Let P = { x : x in R , |x| Q = {x:x in R , |x -1 |ge 2} P uu Q = R - S then set S is : (where R is the set of real number)

if P:Q:R=2:3:4 and P^(2)+Q^(2)+R^(2)=11600 , then find P+Q-R, where P,Q and R are whole numbers.

If P={x in R : f(x)=0} and Q={x in R : g(x)=0 } , then PuuQ is

If A={x:x inW,xle2},B={x:x inN,1ltxlt5 and C={3,5} , then find (i) Axx(BnnC) (ii) Axx(BuuC)

If the relation f(x)={(1",",x in Q),(2",",x notin Q):} where Q is set of rational numbers, then find the value f(pi)+f((22)/(7)) .

Let f:R rarr R such that f(x)=3x,;x in Q,sqrt(2)x+1;x!in Q, where Q is set of rational numbers,then f is

If A={x inN:xle3} and B={x inW,xlt2} , find (AxxB) and (BxxA). Is (AxxB)=(BxxA) ?