Which option correctly describes Q={0,1,4,9,16}?
Answer and explanation
Correct answer: Squares of whole numbers less than 5
The governing idea is recognizing a set through a common rule. Whole numbers less than 5 are 0, 1, 2, 3, and 4. Their squares are 0²=0, 1²=1, 2²=4, 3²=9, and 4²=16, exactly the members of Q. Option B normally omits 0 because natural numbers start at 1, option C gives only 0 and 4, and option D lists primes. Hence option A is correct.
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What is the correct answer to this question?
Squares of whole numbers less than 5
Why is this the correct answer?
The governing idea is recognizing a set through a common rule. Whole numbers less than 5 are 0, 1, 2, 3, and 4. Their squares are 0²=0, 1²=1, 2²=4, 3²=9, and 4²=16, exactly the members of Q. Option B normally omits 0 because natural numbers start at 1, option C gives only 0 and 4, and option D lists primes. Hence option A is correct.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Common Questions.
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