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Question
Which of the following numbers is a prime number?
Which of the following numbers is a prime number?
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Solution
The correct option is D 2
Factors of 35 = 1, 3, 9, 27
Factors of 2 = 1, 2
Factors of 45 = 1, 3, 5, 9, 15, 45
Factors of 18 = 1, 2, 3, 6, 9, 18
We know that a prime number has only two factors, 1 and the number itself, which is true for 2. Therefore, 2 is a prime number.
Factors of 35 = 1, 3, 9, 27
Factors of 2 = 1, 2
Factors of 45 = 1, 3, 5, 9, 15, 45
Factors of 18 = 1, 2, 3, 6, 9, 18
We know that a prime number has only two factors, 1 and the number itself, which is true for 2. Therefore, 2 is a prime number.
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