Which of the following is an Irrational Number?
A. √2
B. 1.75
C. 5
D. 2/3
Answer
Correct Answer: A. √2
Detail About MCQs
An irrational number is a number that cannot be expressed as the ratio of two integers and its decimal expansion goes on forever without repeating.
Out of the options given, only A. √2 is an irrational number.
B. 1.75 is a rational number because it can be expressed as the ratio 7/4.
C. 5 is a rational number because it can be expressed as the ratio 5/1.
D. 2/3 is a rational number because it can be expressed as the ratio 2/3.
Therefore, the answer is A. √2.