1*bar(27)=?

Show that 1.272727 …..= 1. bar(2.7) can be expressed in the form (p)/(q) where p and q are integer and q ne 0

Find the vlaue of 27xx1.bar( 2) xx 5.526bar(2) xx 0.bar( 6) .

2.bar(27) is

Convert 0.bar(27) into a vulgar fraction.

If 0bar(27), x and 0.bar(72) are in H.P. , then x must be :

If 0.bar(27), x and 0.bar(72) are in H.P. , then x must be :

The periodic decimal 0.272727... = 0.bar(27) is the rational number

If bar(a)=(2,1,-1),bar(b)=(1,-1,0),bar(c)=(5,-1,1) then the unit vector parallel to bar(a)+bar(b)-bar(c) , but in opposite direction is