What is the largest number that divides 70 and 125, leaving remainders 5 and 8 respectively?
Answer and explanation
Correct answer: D.
- Step 1: Subtract remainders: and .
- Step 2: Find : , .
- Step 3: The common factor is 13.
Answer
.
Why not the others: divides 65 but does not divide 117; and represent large multiples rather than divisors.
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