Q.

Is the statement true?


The 5 2   is an irrational number.


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a

    True

b

    False 

answer is A.

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Detailed Solution

Given,
The irrational number is 5 2  .
As we know,
The real numbers which cannot be expressed in the form of p q   , where and are integers and q0   is an irrational number.
Let be the rational number,  where,
x=5 2   2 =5x   As x is rational number so 5x   is also a rational number.
Therefore 2   is a rational number.
This is the contradiction as 2   is an irrational number.
So, 5 2   must be an irrational number.
Thus, 5 2   is an irrational number.
Thus, the above statement is true.
Therefore, option(1)     is the correct answer.
 
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