| Directions: Q. 11 to 15 |
| Activity on Real Numbers In a classroom (class-X) activity on real numbers, the students have to pick a number card from a box and frame question on it is not a rational number for the rest of the class. The number cards picked up by first 5 students and their questions on the numbers for the rest of the class are as shown below. |
| Based on the above information answer the following questions. |
A) It is a natural number
B) It is an irrational number
C) It is a rational number
D) None of the above
Correct Answer: B
Solution :
| Given, \[\sqrt{12}\] (a number) |
| \[\sqrt{12}=2\sqrt{3}\] |
| Here, 2 is a rational number and \[\sqrt{3}\] |
| is an irrational number. |
| We know that, product of rational and irrational number is a irrational number. Hence, \[\sqrt{12}\] is an irrational number. |
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