1.

If P – Q – R and d(P, Q) = 2, d(P, R) = 10, then find d(Q, R). (A) 12 (B) 8 (C) √96 (D) 20

Answer»

(B) 8

d(P, R) = d(P, Q) + d(Q, R) 

∴ 10 = 2 + d(Q, R) 

∴ d(Q, R) = 8



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