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Pythagorean triplet (3, 4, ?): missing value:

A5
B6
C√7
D5 (3² + 4² = 25 = 5²)
Answer & Solution
Correct answer: D. 5 (3² + 4² = 25 = 5²)
3-4-5 is a classic Pythagorean triplet: 3² + 4² = 9 + 16 = 25 = 5².
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