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By simplifying \((\sqrt{3}+\sqrt{2}) * (\sqrt{3}+\sqrt{2})\), we get __________

(a) 5 + 4√6

(b) 5 + 2√6

(c) 1

(d) 5

This question was posed to me in an international level competition.

The origin of the question is Representing Real Numbers on the Number Line & Real Numbers Operations topic in division Number Systems of Mathematics – Class 9

By rationalising the denominator of \(\frac{1}{\sqrt{3}}\), we get __________

(a) \(\frac{\sqrt{3}}{3}\)

(b) \(\sqrt{3}\)

(c) \(\frac{3}{\sqrt{3}}\)

(d) \(3\sqrt{3}\)

This question was posed to me at a job interview.

The question is from Representing Real Numbers on the Number Line & Real Numbers Operations in division Number Systems of Mathematics – Class 9

By simplifying \((\sqrt{7}+\sqrt{5}) * (\sqrt{7}-\sqrt{5})\), we get __________

(a) 24

(b) 2

(c) 12

(d) 74

This question was addressed to me by my school teacher while I was bunking the class.

My doubt stems from Representing Real Numbers on the Number Line & Real Numbers Operations in section Number Systems of Mathematics – Class 9

π – π is __________ number.

(a) natural

(b) irrational

(c) rational

(d) negative

This question was posed to me in class test.

Enquiry is from Representing Real Numbers on the Number Line & Real Numbers Operations in chapter Number Systems of Mathematics – Class 9

3 + \(\sqrt{2}\) is a/an __________ number.

(a) natural

(b) irrational

(c) rational

(d) whole

I had been asked this question in a national level competition.

This question is from Representing Real Numbers on the Number Line & Real Numbers Operations topic in portion Number Systems of Mathematics – Class 9

If we add or subtract two irrational numbers, we get __________ number.

(a) natural

(b) rational

(c) irrational

(d) rational or irrational

I had been asked this question during an interview.

The above asked question is from Representing Real Numbers on the Number Line & Real Numbers Operations topic in portion Number Systems of Mathematics – Class 9

If we add or subtract an irrational number and a rational number (non-zero), then we get a/an __________ number.

(a) natural

(b) rational

(c) irrational

(d) rational or irrational

I had been asked this question during an interview.

My question is based upon Representing Real Numbers on the Number Line & Real Numbers Operations in chapter Number Systems of Mathematics – Class 9

If we multiply or divide two rational numbers, we get a/an __________

(a) natural number

(b) whole number

(c) rational Number

(d) irrational number

I had been asked this question in final exam.

The question is from Representing Real Numbers on the Number Line & Real Numbers Operations topic in division Number Systems of Mathematics – Class 9

Summation or Subtraction of two non-zero rational numbers is a/an __________

(a) natural number

(b) whole number

(c) rational Number

(d) irrational number

The question was asked in an interview for internship.

The doubt is from Representing Real Numbers on the Number Line & Real Numbers Operations topic in chapter Number Systems of Mathematics – Class 9

√5 is a/an ___________

(a) natural number

(b) whole number

(c) rational number

(d) irrational number

The question was posed to me during a job interview.

This is a very interesting question from Real Numbers and their Decimal Expansions in portion Number Systems of Mathematics – Class 9

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