Question

Which of the following is not a rational number?
A. 0.30033000333......
B. 0/99
C. 17 3/4
D. -100.1

Answer 1

@Joel_the_boss

Answer 2

A Rational Number is a real number that can be written as a simple fraction (i.e. as a ratio).

Answer 3

Hints:
All integers are rational.
All decimals are rational.
All repeating decimals are rational.
All fractions containing only rational numbers are rational.

Answer 4

1.5 is a rational number because 1.5 = 3/2 (it can be written as a fraction)

Answer 5

Okay

Answer 6

So B right?

Answer 7

Number As a Fraction Rational?
5 5/1 Yes
1.75 7/4 Yes
.001 1/1000 Yes
-0.1 -1/10 Yes
0.111... 1/9 Yes

√2(square root of 2) ? NO !


Oops! The square root of 2 cannot be written as a simple fraction! And there are many more such numbers, and because they are not rational they are called Irrational.

Hope i helped. :)

Answer 8

http://www.mathsisfun.com/rational-numbers.html

Source :P

Answer 9

Ok thank you, I am going with B because 0 is not rational

Answer 10

Yes i think B would be the correct answer :)

Answer 11

i would say a is the correct answer

Answer 12

how do you write a none completing decimal as a fraction ?

Answer 13

0/99 is just zero both real and expressed as a valid fraction

Answer 14

Recall:
All integers are rational.
All non-repeating decimals are rational.
All repeating decimals are rational.
All fractions containing only rational are rational.

0 and 99 are both integers therefore rational, so 0/99 is rational.