Which option is the roster form of L = {x : x is a natural factor of 25}?
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Answer and explanation
Correct answer: L = {1, 5, 25}
The natural numbers that divide 25 exactly are 1, 5, and 25. Hence the complete roster of natural factors is {1, 5, 25}. Option B lists multiples or unrelated numbers, option C omits the factor 5, and option D lists multiples of 25 rather than factors. Therefore option A contains all and only the required factors.
Frequently asked questions
What is the correct answer to this question?
L = {1, 5, 25}
Why is this the correct answer?
The natural numbers that divide 25 exactly are 1, 5, and 25. Hence the complete roster of natural factors is {1, 5, 25}. Option B lists multiples or unrelated numbers, option C omits the factor 5, and option D lists multiples of 25 rather than factors. Therefore option A contains all and only the required factors.
Which subject and chapter does this question cover?
This is a Class 11 464645644646 question. Chapter: 546464646.
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