 # Which ones are irrational numbers? Anonymous
account_balance_wallet \$5

### Question Description kumar_abhishek
School: Purdue University   First we should know what are rational no.s

Rational no.s are numbers which can be expressed in the form of (p/q) where p and q are integers and q is not equal to 0.

so, for a)   3/7 is a rational no. because 3/7 = p/q  and 7 is not 0 . so 4/7 is rational no.

c) ​4 =2 . therefore our no. becomes 21/2 =p/q  and 2 is not 0.  so 21/​√​4  is rational no.

e)  -13 =  ((-13)/1) =p/q   where -13 and 1 are integers and 1 is not 0 . so -13 is rational.

Now, any number in which the number after the decimal never stops or repeat is irrational number.

example   √​2 =0.414......  and it continues and nobody remembers what's coming next .

so all non perfect square numbers under root are irrational numbers.

so  b)  30 = 5*6   since 30 is not a perfect square.  therefore √30 is irrational no.

d) as for Pi ,  Pi = 3.1415......  and never repeats therefore pi is irrational no.

flag Report DMCA  Review Anonymous
awesome work thanks Brown University

1271 Tutors California Institute of Technology

2131 Tutors Carnegie Mellon University

982 Tutors Columbia University

1256 Tutors Dartmouth University

2113 Tutors Emory University

2279 Tutors Harvard University

599 Tutors Massachusetts Institute of Technology

2319 Tutors New York University

1645 Tutors Notre Dam University

1911 Tutors Oklahoma University

2122 Tutors Pennsylvania State University

932 Tutors Princeton University

1211 Tutors Stanford University

983 Tutors University of California

1282 Tutors Oxford University

123 Tutors Yale University

2325 Tutors