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The distance between P(1, −3, 4) and Q(−4, 1, 2) is
A5√3
B√34
C3√5
D4√5
Answer & Solution
Correct answer: C. 3√5
d² = (−5)² + (4)² + (−2)² = 25 + 16 + 4 = 45. d = √45 = 3√5.
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