Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!

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Question 146345: Which of the following is not a rational number?
a. -4
b. 1/5
c. 0.833333333..........
d. 0.45
e. squareroot 2
: Which of the following is not a rational number?
a. -4
b. 1/5
c. 0.833333333..........
d. 0.45
e. squareroot 2

Answer by aswathytony(47) About Me  (Show Source):
You can put this solution on YOUR website!
square root of 2 is not a rational number.
A number which can be expressed in the form p/q, q not equal to 0 is called a rational number.
square root of 2 cannot expressed as a rational no:, its irrational number.
all other number given can be written in the form p/q.