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Q.


Choose whether the given statement is true or false.
Question Imageis not on the real line.


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a

True

b

False  

answer is B.

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Detailed Solution

Step 1: we draw a number line as shown below where O is the center of the line and we write all positive integers on the right side and all negative integers on the left side.
Question Image
Step 2: Now, for representing Question Imageon the real number line, we make a right-angled triangle from the point O as shown below:
 Question Image
Here, A is the point that denotes 1, the number line, so OA=1. Now we will draw a perpendicular from point A to point B , so that AB = 1because it is the same distance in the number as OA = 1.
Step 3: Now, by joining the points B and C,we get a right-angled triangle as shown below:
Question Image
By using Pythagoras theorem in the triangle OAB:
Question Image
By substituting the values of  OA = 1 and AB = 1 in the above expression Question Image,we get:
Question Image
By opening the brackets and adding inside the root, we get:
Question Image
Step 4: Now, by again drawing a perpendicular from a point B to E of length 1 unit as shown below:
Question Image
By applying Pythagoras theorem in the right-angled triangle OEB with Question Image and BE = 1 we get:
Question Image
By substituting the values of Question Image and BE=1 in the above expression Question Image, we get:
Question Image
By opening the brackets inside the root, we get:
Question Image
By doing the addition of the brackets inside the root, we get:
Question Image
Step 5: Now, we will draw an arc from the center point O by taking the radius OE which will cuts the number line into the right side of the center at the point M which will represent Question Image the number line.
Question Image
The point Question Image on the number line is
Question Image
Since, It is false.
The correct statement is: “Question Imageis on the real line.
 
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