Question

If P - Q - R and d(P, Q) = 6 , d(P, R) = 15 , then find d(Q, R). *

21

9

60

90

​

Answer 1

Step-by-step explanation:

(P-Q)=6

(P-R)=15

(Q-R)= (P-R)-(P-Q)

= 15-6

=9