- A(21, 28, 35)
- B(9, 16, 25)
- C(10, 11, 12)
- D(21, 28, 33)
Step-by-Step Solution
. Check: . Adding 7 does not keep a triple.
Answer: A) (21, 28, 35)
Multiplying each number of the triple (3, 4, 5) by 7 gives which triple?
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