`((17/13)/(7/13))`=?

Find the following: 2/(13)+7/(13)+3/(13)

Which of the following is a proper fraction? (a) (13)/(17) (b) (17)/(13) (c) (12)/5 (d) 1 3/4

Evaluate: (7)/(13)-(6)/(13)

Evaluate each of the following: (i) (-5)/(14)+(-2)/7 (ii) (13)/(15)-(12)/(25) (iii) (-6)/(13)-(-7)/(13)

If P(A)=(1)/(4), P(B)=(1)/(13) and P(AcapB)=(1)/(52) , then the value of P(overline(A)capoverline(B)) , is A. (3)/(13) B. (5)/(13) C. (7)/(13) D. (9)/(13)

Show that the three lines with direction cosines (12)/(13),(-3)/(13),(-4)/(13),4/(13),(12)/(13),3/(13);3/(13),(-4)/(13),(12)/(13) are mutually perpendicular.

Show that the three lines with direction cosines (12)/(13),(-3)/(13),(-4)/(13);4/(13);(12)/(13),3/(13);3/(13),(-4)/(13),(12)/(13) are mutually perpendicular.

Solve : 4/(13)+2/(13)+1/(13)

Evaluate : (iii) (4)/(7)-(-8)/(9)-(13)/(7)+(17)/(9)

3/13+7/13+1/13