If `x` is positive two digit integer and `[x]` in G.I.F then probability that `x` satisfies `[x/9] = [x/7]` is

If x and y are two positive integers and x + y = 5 , then what is the probability that x equal 1 ?

If [x] denotes the greatest integer not exceeding x, then the values of x satisfying [x]^(2)-7[x]+12le0 are

The least positive integer x , which satisfies |x-2| gt 7 ?

x and y are two positive integers such that 2,x, y are in A.P. and x, y, 9 are in G.P. then show that -x= 4, y= 6.

How many positive integer x are there such that 3x has 3 digits and 4x has four digits ?

The least positive integer x, which satisfies |x-2|>7?

Find the number of positive integral values of x satisfying [(x)/(9)]=[(x)/(11)] is where [.]-= Gl.F )

D, E and F are three subsets of universal set U defined as follows : D = {x : x is a positive integer le7 } E= {x : x is a positive integer : 5le xle 9 } F= {x : x is a positive integer : 3le xle 12 } U = {x : x is a positive integer le12 } prove D-(E uu F )=(D-E) nn (D-F)