Question

please ...
tell the answers of that question​

Answer 1

Answer:

d(P,Q) =2 .....given

d(P,R) = 10 .......given

d(Q,R) = ?

d(P,R) = d(P,Q) + d(Q,R) ......... P-Q-R

10 = 2 + d(Q,R)

10-2 = d(Q,R)

8 = d(Q,R)

d(Q,R) = 8