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Solution


Q.

In a classroom activity on real numbers, the students have to pick a number card from a pile and frame, question on it, if it is not a rational number for the rest of the class. Thenumber cards picked up by first 5 students and their questions on the numbers for the rest of the class are as shown below. Answer them:

Q: Suraj picked up 8 and his question was:

Which of the following i true about 8:
1 It is a natural number.  
2 It is an irrational number.  
3 It is a rational number.  
4 None of these.  

Ans.

(2)

Explanation: Here, 8 = 22, i.e., product of rational and irrational numbers = irrational number.