Question
Statement 1: If two numbers are co-primes, at least one of them must be prime.
Statement 2: If a number exactly divides the sum of two numbers, it must exactly divide the two numbers separately.
Statement 3: If a number exactly divides two numbers, then it must also divide the sum of both numbers.
Answer: Option B
:
B
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B
Take an example and visualize-
i)9 and 4 are co-prime but none of them are prime.
ii)Now, 14 divides 28, but it does not divide 12 and 16.
iii)4 divides 12 and 16 separately
4 also divides 12+16 = 28
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