[شحات جامع]

If x={2,4,6} and the function F : x----->2, f(x)=2x+3, then the range of the function F equals ............

(4) If X={3,5,7}, n(y)=4 and the function f: X ----->Y , f(x)=2x-5 then Y may be equal ..........O

(3)+3=f(2)=2*2