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Q.

Which of the following is not a rational number?


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a

Question Image

b

Question Image

c

Question Image

d

Question Image 

answer is A.

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Detailed Solution

Concept- A non-terminating, non-repeating decimal number would be one that continues indefinitely with no group of digits repeating indefinitely. Because decimals of this type cannot be represented as fractions, they are irrational numbers.
Question ImageQuestion ImageQuestion ImageQuestion ImageHere, the decimal representation of Question Image is non-terminating non repeating.
Therefore, Question Image is not a rational number.
Hence, the correct answer is option 1) Question Image.
 
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