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  • if n(X)=4 ,n(X x Y ) = 12 ,Then n(Y) = ........
    3
  • if n(X)=4 ,n(X x Y ) = 20 ,Then n(Y x Y) = .......
    25
  • sin (x) =cos (y) ,then sin (x) +cos (y) =....................
    2 sin (x) or 2 cos(y)
  • f(x) =x+5 ,then f(5)= .............
    10
  • sin(x) =cos(70) ,the m(<x)= ............
    20
  • f(x) =5 ,then f(3)= ...........
    5