If D={x: x is a positive factor of 48 and x<10}, what is D?
Answer and explanation
Correct answer: D={1,2,3,4,6,8}
The governing concept is intersection of two conditions: being a positive factor of 48 and being less than 10. Checking the divisors gives 1,2,3,4,6,8 below 10; each divides 48 exactly. The factor 12 is too large, while 9 and 10 are not factors of 48. Thus option A contains precisely all valid members and is correct.
Frequently asked questions
What is the correct answer to this question?
D={1,2,3,4,6,8}
Why is this the correct answer?
The governing concept is intersection of two conditions: being a positive factor of 48 and being less than 10. Checking the divisors gives 1,2,3,4,6,8 below 10; each divides 48 exactly. The factor 12 is too large, while 9 and 10 are not factors of 48. Thus option A contains precisely all valid members and is correct.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems.
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