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Question
The greatest common divisor of 10, 15 and 25 is
The greatest common divisor of 10, 15 and 25 is
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Solution
The correct option is C 5
Let's find the prime factors of 10, 15 and 25 using ladder method
Prime factorization of the numbers 10, 15 and 25:
10 = 2 × 5
15 = 3 × 5
25 = 5 × 5
The numbers 10, 15, and 25 have only one common factor 5, so the greatest common divisor of these numbers is 5.
Let's find the prime factors of 10, 15 and 25 using ladder method
Prime factorization of the numbers 10, 15 and 25:
10 = 2 × 5
15 = 3 × 5
25 = 5 × 5
The numbers 10, 15, and 25 have only one common factor 5, so the greatest common divisor of these numbers is 5.
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